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Flu Epidemics Force versus Virus Type in USA 认领
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作者 Edgar Pereira Cecília Rosa 《流行病学期刊(英文)》 2020年第2期158-166,共9页
We estimate the influenza force according to the virus type in the USA (United States of America) for the season 2010/11 to 2019/20. For these we use the data available from CDC (Centers for Disease Control and Preven... We estimate the influenza force according to the virus type in the USA (United States of America) for the season 2010/11 to 2019/20. For these we use the data available from CDC (Centers for Disease Control and Prevention) related to Public Health Laboratory Virologic Age Surveillance and The Burden Estimates presented by CDC yearly. 展开更多
关键词 INFLUENZA FORCE VIRUS Types Age Groups ESTIMATES Laboratory Tests
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Technology Embedding of Classroom Teaching: Types, Issues and Responses 认领
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作者 Xiaojun Wei 《应用科学(英文)》 2020年第6期409-415,共7页
<span style="font-family:Verdana;">As the new demands on curriculum teaching in the information age, the application of various technologies is profoundly affecting classroom teaching today. The techno... <span style="font-family:Verdana;">As the new demands on curriculum teaching in the information age, the application of various technologies is profoundly affecting classroom teaching today. The technology-embedded classroom approach includes technology-</span><span style="font-family:""> </span><span style="font-family:Verdana;">assisted teaching, technology-integrated teaching, and technology-based</span><span style="font-family:""><span style="font-family:Verdana;"> teach</span><span style="font-family:Verdana;">ing. There are still some deficiencies in the technological embedding of</span><span style="font-family:Verdana;"> course teaching, the technological presentation of knowledge destroys the ecosystem of classroom, the technological controlled teaching hinders the development of teacher-student relationship, and the value orientation under technological efficiency neglects the integrated development of students. It is recommended </span><span style="font-family:Verdana;">to develop an ecological view of technological development, a pedago</span><span style="font-family:Verdana;">gical system focused on teacher-student interaction and an evaluation system with a multi-valued orientation.</span></span> 展开更多
关键词 TYPES ISSUES RESPONSES Top-Level Design Problem Solving Pluralistic Value
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Discussion on the Minerogentic Series of Gold Deposit in Qinghai 认领
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作者 Tong Pan Fude Wang 《地球科学和环境保护期刊(英文)》 2020年第3期1-9,共9页
Gold is one of the most important strategic minerals in Qinghai province. Based on the metallogenic characteristics, types, ore control factors and spatial distribution of gold deposits, the metallogenic regularities ... Gold is one of the most important strategic minerals in Qinghai province. Based on the metallogenic characteristics, types, ore control factors and spatial distribution of gold deposits, the metallogenic regularities of gold deposits were put forward. It’s divided the pre-Cambrian, Early Paleozoic, Late Paleozoic, Mesozoic and Cenozoic the metallogenic series assemblages, and also their distribution features are discussed which focus on five metallogenic periods. According to the theory of metallogenic series of ore deposits, combining with characteristics of typical gold deposits, twenty metallogenic series are preliminarily divided in Qinghai province. It is pointed out some suggestions about prospecting and exploration of gold deposits in Qinghai. 展开更多
关键词 GOLD Deposits METALLOGENIC Background GOLD Deposit Types Mineralization EPOCH Minerogenetic SERIES QINGHAI Province
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Source of mycorrhizal inoculum influences growth of Faidherbia albida seedlings 认领
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作者 Emiru Birhane Mengsteab Hailemariam +3 位作者 Girmay Gebresamuel Tesfay Araya Kiros Meles Hadgu Lindsey Norgrove 《林业研究:英文版》 SCIE CAS CSCD 2020年第1期313-323,共11页
Poor land use management and practice inhibit the growth and establishment of tree seedlings in dryland areas.We assessed arbuscular mycorrhizal fungi(AM)status of Faidherbia albida(Del.)A.Chev.trees grown on differen... Poor land use management and practice inhibit the growth and establishment of tree seedlings in dryland areas.We assessed arbuscular mycorrhizal fungi(AM)status of Faidherbia albida(Del.)A.Chev.trees grown on different land uses.We quantified the growth and nutrient uptake of F.albida seedlings inoculated with AM from different sources.These efforts were based on soil and fine root samples from the rhizosphere soils of F.albida trees.AM root colonization was determined using the gridline intersect method.Spores were extracted by the wet sieving and decanting method and identified to genus level.The seedling experiment had a completely randomized onefactorial design with four treatments and five replications.Faidherbida albida seedlings were grown in a greenhouse.All in situ F.albida trees were colonized by AM fungi.AM root colonization of F.albida trees was significantly higher(P<0.0086)in area exclosures than on lands used for grazing or cultivation.Spore abundance was significantly higher(P<0.0014)in area exclosures followed by cultivated land and grazing land.Glomus was the dominant genus in all land-uses.AM-inoculated F.albida seedlings grew better(P<0.05)than non-inoculated controls.Seedlings inoculated with AM from area exclosure had significantly(P<0.05)higher growth and nutrient uptake than those inoculated with AM from grazing and cultivated land.This emphasizes the importance of the native soil AM potential for better establishment of seedlings to achieve optimum plant growth improvement and assist in rehabilitation of degraded arid lands. 展开更多
关键词 SPORE abundance AM COLONIZATION INOCULUM TYPES Land-use TYPES Nutrient uptake GROWTH parameters
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中国地貌区划理论与分区体系 认领
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作者 王楠 程维明 +2 位作者 王白雪 刘樯漪 周成虎 《地理学报:英文版》 SCIE CSCD 2020年第2期212-232,共21页
Geomorphological regionalization(geomor-region)and geomorphological type(geomor-type)classification are two core components in the geomorphologic research.Although remarkable achievements have been made in the study o... Geomorphological regionalization(geomor-region)and geomorphological type(geomor-type)classification are two core components in the geomorphologic research.Although remarkable achievements have been made in the study of geomor-region,many deficiencies still exist,such as the inconsistency of landform indicators,the small quantity of division orders,disparities of geomorphological characteristics,differences of mapping results,and the small scale of zoning maps.Requirements for improved national geomor-regions are therefore needed for the purpose of an enhanced national geo-information system.Based on theories of geomor-region in China including plate tectonics,crustal features,endogenic and exogenic forced geomorphological features,and regional differentiations of geomor-type,a three-order(major-region,sub-region,and small-region)research program on China’s geomor-regions is proposed on the basis of previous 2013 geomor-region system.The major contents of the new geomor-region scheme are:(1)principles of the national multi-order geomor-regions;(2)hierarchical indicator systems of geomor-regions including characteristics of the terrain ladder under the control of tectonic setting,combinations of regional macro-form types,combinations of endogenic and exogenic forces and basic types of morphology,combinations of regional morphological types,and combinations of regional micro-morphological types;(3)naming rules and coding methods of geomor-regions;and(4)precise positioning techniques and methods of multi-order geomor-region divisions based on multi-source data.Using the new geomor-region theory and division methodology,the partition of national three-order geomor-regions of China was successfully constructed.The geomor-region system divided China into six first-order major-regions,36 second-order sub-regions,and 136 third-order small-regions.In addition,a database and management information system of the national geomor-regions were established.This research has an important guiding significance for promoting the d 展开更多
关键词 geomorphological REGIONALIZATION geomorphological TYPES HIERARCHICAL SYSTEM China
三声调民族语的声调类型和特点 认领
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作者 郭承禹 江荻 《大连民族大学学报》 2020年第6期549-555,共7页
文章以汉藏语系与南亚语系语言为主,讨论了三声调民族语的声调类型和特点。依据声调系统的调类来源将这些语言分为三种类型:典型三声调语言、类三声调语言和原三声调语言。然后以独龙语、松林话和纳木兹语为例,进行个案分析。最后总结... 文章以汉藏语系与南亚语系语言为主,讨论了三声调民族语的声调类型和特点。依据声调系统的调类来源将这些语言分为三种类型:典型三声调语言、类三声调语言和原三声调语言。然后以独龙语、松林话和纳木兹语为例,进行个案分析。最后总结三声调语言的声调特点,讨论“第三调”的由来,并与汉语三声调方言进行比较。 展开更多
关键词 三声调 民族语 类型 特点
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甘肃迭部地区地质遗迹资源类型与开发利用及保护 认领
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作者 李小强 闫少波 +4 位作者 脱世博 王军 任文秀 刘明强 李通国 《地质论评》 CAS CSCD 北大核心 2020年第6期1719-1728,共10页
通过调查研究发现甘肃迭部地区地质遗迹资源涵盖3大类7类13亚类,尤以碳酸盐岩(岩溶地貌)、峡谷及冰川地貌等资源最为典型。区内数量繁多且独具特色的地质遗迹资源,是对中生代以来青藏高原东北缘地区沉积地层演化与区域构造—气候耦合过... 通过调查研究发现甘肃迭部地区地质遗迹资源涵盖3大类7类13亚类,尤以碳酸盐岩(岩溶地貌)、峡谷及冰川地貌等资源最为典型。区内数量繁多且独具特色的地质遗迹资源,是对中生代以来青藏高原东北缘地区沉积地层演化与区域构造—气候耦合过程中的重要地质事件的灵敏反映与记录者。提出了以政府引导与规范管理、协调统一与科学规划及品牌宣传的保护与开发利用建议,可为政府对迭部地区旅游产业整体规划、发展、决策和生态环境保护等提供依据,为开发这一地区的旅游资源提供引导。 展开更多
关键词 甘肃迭部 地质遗迹 类型 保护利用
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关于充电桩的使用及前景 认领
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作者 侯波 傅留虎 董渊 《机械工程与自动化》 2020年第3期225-226,共2页
充电桩作为电动汽车的充电设备,平时都是人工直接操作,为避免造成人身及财产损失,对其使用方法及安全保护方面都提出了很高的要求。首先对充电桩的类型进行了描述,然后给出了充电桩使用的注意事项,最后展望了充电桩的前景,其对保护环境... 充电桩作为电动汽车的充电设备,平时都是人工直接操作,为避免造成人身及财产损失,对其使用方法及安全保护方面都提出了很高的要求。首先对充电桩的类型进行了描述,然后给出了充电桩使用的注意事项,最后展望了充电桩的前景,其对保护环境起到了一定的作用。 展开更多
关键词 充电桩 安全 类型
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An Analysis of English Listening Test-taking Skills and Strategies for College Entrance Examination under A New Field of View 认领
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作者 陈燕 《海外英语》 2020年第8期108-110,114共4页
As we all know, listening has always been a weak point in students' English learning. Doing English listening tests often encounter some difficulties. At the same time, many students have a serious fear of listeni... As we all know, listening has always been a weak point in students' English learning. Doing English listening tests often encounter some difficulties. At the same time, many students have a serious fear of listening test, and listening itself has a transient effect, so students should be able to calmly cope with the listening test to play the best level. In addition, students need to understand the types of the college entrance examination listening test , listen to more listening practice and lay a solid foundation. Students should also master some listening skills, so as to obtain high scores. 展开更多
关键词 LISTENING TEST DIFFICULTIES the types of t LISTENING TEST LISTENING test-taking SKILLS
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我国社会办医疗机构参与医疗联合体建设的模式和认识 认领
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作者 赵云 《中国医院》 2020年第1期10-12,共3页
社会办医疗机构参与医联体建设是医疗卫生供给侧改革的重要内容。然而,社会办医疗机构参与医联体建设还是一个新生事物,社会办医疗机构参与医联体建设的认识仍然较乱,社会办医疗机构参与医联体建设的数量仍然较少,社会办医疗机构参与医... 社会办医疗机构参与医联体建设是医疗卫生供给侧改革的重要内容。然而,社会办医疗机构参与医联体建设还是一个新生事物,社会办医疗机构参与医联体建设的认识仍然较乱,社会办医疗机构参与医联体建设的数量仍然较少,社会办医疗机构参与医联体建设的层次仍然较低,社会办医疗机构参与医联体建设的研究仍然较弱。笔者经过社会调查概括社会办医疗机构参与医联体建设的主要模式,同时经过文献研究分析社会办医疗机构参与医联体建设的认识及其不足,为当前社会办医疗机构参与医疗联合体建设的理论研究和政策实践提供参考。 展开更多
关键词 社会办医 医疗联合体 民营医院 医院改革
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Evaluation of new Austrian tunnelling method applied to Bolu tunnel’s weak rocks 认领
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作者 Ebu Bekir Aygar 《岩石力学与岩土工程学报:英文版》 SCIE CSCD 2020年第3期541-556,共16页
Since the development of the new Austrian tunnelling method(NATM)in the 1960s,this technique has been applied successfully in many tunnels.However,opinions of NATM principles emerged till 2000,i.e.NATM is not a tunnel... Since the development of the new Austrian tunnelling method(NATM)in the 1960s,this technique has been applied successfully in many tunnels.However,opinions of NATM principles emerged till 2000,i.e.NATM is not a tunnelling method,but an approach covering all general principles of tunnelling.To investigate the general principles of the NATM,this study focused on tunnelling practises in the Bolu tunnel,and evaluated the conditions under which the NATM practises could be effective.The Bolu tunnel project was designed following the NATM principles.It is evident that practises adopted in this tunnel are important with respect to the NATM.In addition,it shows that the solutions to the problems encountered in this tunnel are consistent with the NATM principles.Finally,the study determines the ground types of the NATM principles and proposes associated updates. 展开更多
关键词 Bolu tunnel New Austrian tunnelling method(NATM) Support types
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Project Registration of Complementary Activity in Slovenia 认领
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作者 Natalija Brečko 《环境科学与工程:A》 2020年第5期170-173,共4页
In this paper,author will present the conditions for registration of complementary activities,the number of complementary activities and different types of complementary activities on farms in Slovenia.Complementary a... In this paper,author will present the conditions for registration of complementary activities,the number of complementary activities and different types of complementary activities on farms in Slovenia.Complementary activities on farms must meet certain verifiable requirement.This is also a guarantee to users of the regulated field of activity.Farmers are aware that a complementary activity on a farm is an added value.That is why the complementary activities are considered as an informal brand of farms.A farmer that has at least one hectare of agricultural area in use may register a complementary activity on the farm with the administrative unit.One exception is a complementary activity which involves beekeeping activities,with at least ten bee families required to be entered in the register of beekeepers.In this case,the threshold of at least one hectare of comparable agricultural land is not required.Registration of a complementary activity on a farm enables a better use of the production capacities and the workforce of a farm,as well as the acquisition of additional income. 展开更多
关键词 FARM REGISTRATION types of complementary activity
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Modeling Violence Among and Against University Students in a Mexican Medium-Sized City 认领
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作者 Alicia Sylvia Gijón-Cruz Rafael G.Reyes-Morales +2 位作者 Blanca Azucena García-Ramírez Juan Luis Bautista-Martínez Nadia Esteva-Duran 《中国经济评论:英文版》 2020年第6期226-239,共14页
Violence against university students and among them is analyzed on campus and the household as well as the relationships of violence between these two social spaces.The study was undertaken through an anonymous random... Violence against university students and among them is analyzed on campus and the household as well as the relationships of violence between these two social spaces.The study was undertaken through an anonymous random survey in the two larger public universities in a Mexican medium-sized city.Overall violence and types of violence-verbal,psychological,sexual,and physical-were evaluated by sex and by universities;and the aggressors were identified.A students’concept of violence was built,considering causes of intimate-partner violence,violence in general and ethical judgment on gender violence.Finally,it was measured the relationships between violence on campus and in the household using bivariate statistical analysis.Findings indicate the main aggressors on campus are classmates and professors,whereas in the household are the mother,relatives together with the parents and relatives without the parents.On-campus,there were found statistically significant associations between professors-aggressors and students as victims of violence by sex.In the household,the bivariate analysis confirmed mothers as single aggressors and fathers exerting violence together with relatives against student-children;and direct relationships between on-campus(psychological and sexual violence)and domestic(physical and sexual violence). 展开更多
关键词 types of violence violence by sex aggressors students’concept of violence
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泥炭藓沼泽湿地评价及保护——以大兴安岭东部林区为例 认领
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作者 于跃辉 《安徽林业科技》 2020年第2期39-42,共4页
大兴安岭东部林区湿地是国内乃至国际具有代表性的寒温带湿地群,其中泥炭藓沼泽湿地是大兴安岭东部林区沼泽湿地的特殊类型,约有13万hm2,既有连续分布,也有零星分布,这在全国湿地分布中绝无仅有,具有典型性、特殊性、代表性、稀有性和... 大兴安岭东部林区湿地是国内乃至国际具有代表性的寒温带湿地群,其中泥炭藓沼泽湿地是大兴安岭东部林区沼泽湿地的特殊类型,约有13万hm2,既有连续分布,也有零星分布,这在全国湿地分布中绝无仅有,具有典型性、特殊性、代表性、稀有性和脆弱性。本文从泥炭藓沼泽湿地的价值入手,介绍大兴安岭东部林区泥炭藓沼泽湿地形成原因和保护现状,分析其类型、特征和特性,并提出保护建议。 展开更多
关键词 泥炭藓沼泽湿地 类型 保护
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新时代高校大学生人格障碍的成因与对策 认领
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作者 谢小萌 《吉林省教育学院学报》 2020年第10期55-58,共4页
随着党和国家事业进入新时代,培养担当民族复兴大任的时代新人成为高校的核心课题。当前不容忽视的是大学生群体焦虑特征明显,其中不少人表现出一定的人格障碍特征,甚至深受人格障碍问题困扰。新时代大学生人格障碍有着独特的内涵和类... 随着党和国家事业进入新时代,培养担当民族复兴大任的时代新人成为高校的核心课题。当前不容忽视的是大学生群体焦虑特征明显,其中不少人表现出一定的人格障碍特征,甚至深受人格障碍问题困扰。新时代大学生人格障碍有着独特的内涵和类型表现,同时又深刻地受到家庭、学校、社会与个人自身等各种因素的影响。新时代大学生人格障碍教育引导对策必须采用合理的家庭教育方式,必须构建和谐互助的校园环境,必须打造健康的社会支持系统,培养大学生积极的生活态度。 展开更多
关键词 新时代大学生 人格障碍 类型 成因 对策
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新疆兵团盐渍化农田现状与防治对策 认领
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作者 郑飞敏 贾志峰 +1 位作者 梁飞 马旭 《农学学报》 2020年第5期36-41,共6页
为了研究新疆兵团土壤盐渍化现状问题,2015-2017年基于盐碱地划分标准设计了盐碱地分类面积表、盐碱地化学类型表、不同程度盐碱地生产状况表和盐碱地改良状况表等4份调查表,对139个团场进行盐渍化调查。调查结果表明,兵团盐渍化农田面... 为了研究新疆兵团土壤盐渍化现状问题,2015-2017年基于盐碱地划分标准设计了盐碱地分类面积表、盐碱地化学类型表、不同程度盐碱地生产状况表和盐碱地改良状况表等4份调查表,对139个团场进行盐渍化调查。调查结果表明,兵团盐渍化农田面积约为53.1万hm2,占总播种面积(120.2万hm2)的44%,盐渍化耕地中约23.2%为原生盐渍土,76.8%为次生盐渍土;硫酸盐型、氯化物型、苏打型和碱土型盐渍化耕地的面积分别为16.19万、5.85万、20.65万、10.41万hm2,分别占兵团盐渍化土壤面积的30.5%、11.0%、38.9%、19.6%。次生盐渍化普遍造成作物减产,化肥和有机肥投入量随着盐渍化加剧而增加。目前,盐碱地治理的方法有水利改良、农业改良、生物治理和化学改良,但是不同改良方法的改良效果差别较大,水利措施和农业措施改良效果较好。为防治土壤盐渍化,需建立兵团耕地质量数据库和兵团盐渍化农田综合治理领导小组,联合疆内外高校共同开展技术攻关与技术集成。 展开更多
关键词 新疆兵团 盐渍化 类型 改良 现状 综合治理
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区分:等级之差抑或类型之别 ——兼谈“尊敬”的形态 认领
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作者 王小章 《浙江工商大学学报》 CSSCI 北大核心 2020年第6期131-137,共7页
在《区分:判断力的社会批判》中,布尔迪厄区分出了三个等级层次的文化趣味(生活风格):合法趣味、“中产阶级”趣味和民众趣味;进而,通过将“趣味”(生活风格)与“习性”关联,凸显了“文化趣味”在标识和维护身份等级及其社会再生产中的... 在《区分:判断力的社会批判》中,布尔迪厄区分出了三个等级层次的文化趣味(生活风格):合法趣味、“中产阶级”趣味和民众趣味;进而,通过将“趣味”(生活风格)与“习性”关联,凸显了“文化趣味”在标识和维护身份等级及其社会再生产中的重要性,而一些美国学者在布尔迪厄著作的激发下所做的研究则质疑了这种重要性。在看待不同的文化趣味、生活风格时,欧洲人更倾向于从等级高低的角度来评判,而美国佬则相对更强调类型上差异;这种审视视角的差异,根源于欧美不同的历史所形成的社会结构性差异。看待文化趣味、生活风格的不同视角,关联着社会尊敬的不同形态:越是倾向于从等级高低的角度来审视,则越会形成“不平等社会”式的尊敬形态,而越是倾向于从多样性、类型化的角度来看待,则越有可能形成“平等主义”的尊敬形态。 展开更多
关键词 文化趣味 等级 类型 尊敬
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Impact of rock type on the pore structures and physical properties within a tight sandstone reservoir in the Ordos Basin, NW China 认领
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作者 Xiang-Dong Yin Shu Jiang +4 位作者 Shi-Jia Chen Peng Wu Wei Gao Ji-Xian Gao Xian Shi 《石油科学:英文版》 SCIE CAS CSCD 2020年第4期896-911,共16页
The pore-throat systems and physical properties of tight sandstone reservoirs are complex,and deposition is thought to be a fundamental control for them.In this study,the impacts of the full ranges of rock types(from ... The pore-throat systems and physical properties of tight sandstone reservoirs are complex,and deposition is thought to be a fundamental control for them.In this study,the impacts of the full ranges of rock types(from pebbly coarse sandstone to fine sandstone) on the pore structures and physical properties of the Permian tight sandstone reservoir in the eastern Ordos Basin were investigated comprehensively through a series of experiments including conventional physical testing,thin-section analysis,scanning electron microscopy,nuclear magnetic resonance analysis and high-pressure mercury injection tests.The results showed that the coarser-grained sandstones tend to have higher feldspar content and lower percentage of cements,leading to strong dissolution,weak cementation and improved porosity and permeability.The medium sandstone has the highest level of quartz and the lowest average content of feldspar,resulting in strong heterogeneity of physical properties.Only those medium sandstone reservoirs with relatively high content of feldspars have better physical properties.Additionally,the coarser-grained sandstones contain relatively large dissolution pores(nearly 200 μm),whereas the finer-grained sandstones have more intercrystalline pores with a relatively more homogeneous pore structure.The pebbly coarse sandstone and coarse sandstone reservoirs are favorable targets with best physical properties. 展开更多
关键词 Pore size distribution Pore types Physical properties Tight sandstone Ordos Basin
利用微生物生物转化大黄的研究进展 认领
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作者 文雅 于雪荣 +2 位作者 王泓午 郝征 邢竹青 《中国酿造》 CAS 北大核心 2020年第7期7-10,共4页
随着我国发酵工艺水平的快速提高,利用微生物资源对大黄等中药进行生物转化渐渐成为趋势。该文通过收集国内外现有报道中大黄发酵菌株的类型和研究现状、大黄发酵技术目前的局限性,总结了大黄创新发酵技术优势、现有大黄发酵菌株的种类... 随着我国发酵工艺水平的快速提高,利用微生物资源对大黄等中药进行生物转化渐渐成为趋势。该文通过收集国内外现有报道中大黄发酵菌株的类型和研究现状、大黄发酵技术目前的局限性,总结了大黄创新发酵技术优势、现有大黄发酵菌株的种类及利弊,为大黄发酵条件优化的进一步研究奠定基础,也展现出大黄发酵技术的广阔前景。 展开更多
关键词 大黄 发酵菌株 种类 局限性
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苏北地区东路强冷空气指标分析及预报 认领
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作者 张方方 赵杰 +2 位作者 孙磊 赵宇 武艳 《湖北农业科学》 2020年第9期49-53,59,共6页
统计2001—2010年的苏北地区气象资料,按照东路冷空气的标准对其进行4个分型,根据每一型的特点得出预报指标。统计10年间符合条件个例的850和925 hPa 48 h降温幅度和地面48 h降温幅度之间的关系,根据得出的各项指标,选用2011—2012年的... 统计2001—2010年的苏北地区气象资料,按照东路冷空气的标准对其进行4个分型,根据每一型的特点得出预报指标。统计10年间符合条件个例的850和925 hPa 48 h降温幅度和地面48 h降温幅度之间的关系,根据得出的各项指标,选用2011—2012年的资料进行试预报。结果表明,东路冷空气的预报准确率在90%以上,且两槽一脊型出现的次数较多,其次是横槽转竖型和阻高型,低槽东移型基本没有出现。上层温度的降幅对于地面气温的降幅有较高的参考意义。 展开更多
关键词 东路冷空气 分型 降温幅度 苏北地区
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