Grounded on the newly - occurring phenomena of contract since the twentieth century , it makes a reflection on classical contract law - that is , classical contract law has lost its vitality in the society since the twentieth century 主要以20世纪以来出现的新契约现象为契机，引发了对古典契约法的思考，认为古典契约法在20世纪以来的社会中真的已经失去了生命力。
As for weather forecasting techniques , the hko is studying the feasibility of implementing a new generation numerical weather prediction model with a 6 - km resolution to complement the existing 20 - km resolution one 在天气预测技术方面，天文台正展开可行性研究，以水平6公里分辨率运算新一代电脑数值预报模式，以补充现时以20公里水平分辨率运行的数值预报模式的不足。
Individual housing mortgages loan is commonly with 20 or 30 start , once house price drops 30 % , the asset of the bank is met rapid shrink , return a likelihood badly to cause financial crisis , cause economic occurrence depression 个人住房按揭贷款一般都是以20或30起步的，一旦房价下跌30 % ，银行的资产就会迅速缩水，严重的还可能导致金融危机，导致经济出现萧条。
This paper makes an attempt to analyze its unique cultural connotation by illustrating all kinds of bright zoomorphism molded in chinese fairy tales from the end of the 20th century to recent years , from which it further spies on the unique national character of the chinese nation 本文试以20世纪末至近年来中国童话所塑造的各种鲜明的动物形象为例，分析其所体现的独特的文化内涵，并进一步从中窥探中华民族独特的民族品格。
Were studied together with the reference strains of recognized rhizobium and bradyrhizobiwn species by performing polyphasic taxonomy , including numerical taxonomy , rep - pcr fingerprinting , 16s rdna pcr - rflp . the result show that : the growth rate of rhizobia isolated from the root nodules of pueraria spp . showed great diversity . ccbau41147 ccbau6110 k ccbau61096 and ccbau61095 were fast - growing strains , the single colony size was bigger than 1mm after 2 days incubated oq yma medium at 28 they can produce acid . the other strains were slow - growing strains , their single colony size was less than 1 mm after 7 days incubated on yma medium at 28 . they can produce alkali 本研究以从我国四川、河南、安徽和湖南等地分离的32株葛藤根瘤菌为研究对象，以20株已知种的根瘤菌为参比菌株，采用数值分类、 rep - pcr指纹分析、 16srdnapcr - rflp指纹分析等现代根瘤菌分类技术，初步研究了葛藤根瘤菌的生物多样性和分类地位，结果表明：葛藤根瘤菌在生长速率上表现出多样性，菌株ccbau41147 、 ccbau61096 、 ccbau61101和ccbau61095生长较快， yma培养基上28培养2 - 3天后，单个菌落直径大于1mm ，具有产酸能力，是快生型葛藤根瘤菌；其余待测葛藤根瘤菌生长较慢， yma培养基上28培养7天后，单个菌落直径小于1mm ，具有产碱能力，是慢生型葛藤根瘤菌。
By investigating the development of fixing farm output quotas for each household in 1950s and 1960s , the author found out that , during the process of starting , promoting and hindering the changes in rural system , local cadres of all levels had significantly influenced the changes due to their difference in value concept and behavior orientation 摘要以20世纪五六十年代包产到户沉浮为中心考察后发现，在启动、推进、阻碍农村制度变迁的进程中，地方干部，无论是中高层的还是基层的，因价值观及行为取向的不同，对此产生了不可忽视的影响。
For the following training tutorial , we have used tracks of extraterrestrial particles that were captured in the odce collector on the russian space station mir , and tracks of submicron dust particles shot into aerogel at 20 km / sec using a van der graaf dust accelerator in heidelberg , germany 在随后的培训指南里，我们使用的轨迹是俄罗斯和平号空间站上的odce收集器捕获的地外微粒轨迹，和一些使用德国海德堡“范德夫冈”尘埃加速器以20千米/秒的速度射入气凝胶的亚微米微粒的轨迹。
Having traced back to all the relevant research in the last twenty years and focused on the ethnic origin , painting years and images of cangyuan rock paintings , the author summarizes the research and achievements of this study and expects to reveal its future orientation 摘要以20多年来国内公开出版和发表的学术论著为线索，着重从沧源崖画的综合性研究、族属研究、年代研究、图像研究等方面，对学术界关于云南沧源崖画的研究作了综述，以期展示云南沧源崖画研究的成果和明确今后的研究方向。
Private funds have very strong vitality and develop quickly . especially since 1990s , with the deepening of financial globalization and the innovation of various investment tools , american private funds have obtained extremely great development . the number and scale of private funds increase by 20 % per year , which have already become one of the forces that develop fastest in american financial field 私募基金有着顽强的生命力，发展比较迅速，尤其是90年代以来，随着金融全球化趋势的加深和各种投资工具的创新，美国私募基金业获得极大的发展，基金的数量和规模每年都以20的速度增长，现在已经成为美国金融领域一支成长最快的力量。
