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Abstract: The paper summarized the present situation of nitrate pollution in some area of our country where the surface water, underground water and vegetable crop were polluted by using nitrogen excessively, put forward some proposals and control counter
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文摘:概述了我国部分地区因过量施用化肥氮而导致对地面水、地下水及蔬菜造成硝酸盐污染的现状；提出了制定《农田施肥污染防治管理规定》等防止农业生态环境氮污染的对策意见。 |
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Abstract: The paper takes the medical insurance of Shenzhen City as an example, introducing the development of the information technology in medical insurance from the unprofessional angel.
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摘要：本文以深圳市为例，从非技术角度，介绍了医疗保险信息化的发展过程和医疗保险信息化监管的内容，并展望了医疗保险信息化及信息化监管工作的前景。 |
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Abstract: The paper tries to illustrate the compatibility and incompatibility between concepts and their orders by probing into the realtions of the concepts,which gives reader a clear understanding of the concepts,the order and the compatibility of the c
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文摘:力求通过概念之间关系的探讨，理清概念间相容与不相容以及它们的层次关系，使人们对概念及概念的层次、相容等关系有一个清楚的了解，以指导工作实践. |
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Abstract: The paper,taking standard language data from modern chinese work since the time of May 4th movement, focuses on analysing the three dimensions in the variables of disyllables in forming ner words of morden Chinese: disyllables expanded from sing
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文摘:本文以五四以来典范的现代白话文著作中的词语为例，分析了现代汉语双音节化主要的三种途径：单音节词扩充为双音节词，三音节或多音节词压缩为双音节词，词组凝固为双音节词。 |
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Abstract: The parallel computer's resource can be used efficiently by proper task partitioning and parallel granularity controlling.By analyzing the characteristic of simulation program,this paper points out a task partitioning algorithm which take state
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文摘:有效地进行任务划分、控制并行粒度，才能充分利用并行计算机的资源，通过对复杂连续系统仿真程序特点的分析，提出了以状态方程为核心、以右函数段的计算为主要对象的自动任务划分算法，使用结果表明具有很好的并行效果。 |
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Abstract: The park design is about the renovation and enlargement based on an old shelterbelt in the suburb.
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摘要:这是一个依托城郊老旧防护林带进行更新扩建的公园设计。 |
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Abstract: The passage probes into the requirement of the continuous casting technology for the preformances of crystal implement copperplate.On the basis of the comparison of profermances of different typtes of crystal implement copperplates at home,a rea
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文摘:探讨了连铸技术对结晶器铜板性能的要求，在比较国内各种不同类型结晶器铜板性能的基础上，确定了研制方案，所研制的产品在强度、硬度、耐磨性、导热性等方面均优于国内现有结晶器铜板. |
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Abstract: The performance of screw compressor in air-source heat pump heater/chiller unit operatingin winter is simulated using the neural networks.
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文摘:采用神经网络对冬季运行的空气源热泵冷热水机组中螺杆式压缩机的特性进行了模拟。 |
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Abstract: The permeability of 12 types of geotextiles, used as sub-drain pipe filters, were tested andcompared under two kinds of soils sampled from Ningxia Yinbei Drainage Project area.
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文摘:采用一维和二维渗透模型对土工织物作为农田暗管排水外包滤料进行了试验研究。 |
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Abstract: The petrologic characteristic and the pore types of Y8～Y10 reservoir are studied by X-ray diffraction method, the quantitative mineral clay analysis method and thin-section analysis method.Based on the study,the mistakes are corrected in the nam
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文摘:利用X衍射全岩分析方法、粘土矿物定量分析方法和薄片鉴定等方法研究了城华地区延8-延10储层岩石学特征和孔隙成因类型.综合论述了城华地区延8～延10油组不同岩相储层砂岩的基本特征，纠正了砂岩定名的错误和主要填隙物成份的错误，同时还论述了储层砂岩的孔隙特征和控制孔隙发育的主要因素. |
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Abstract: The phenyl Lithium, 2-methoxy phenyl Lithium and 2,4-dimethoxy phenyl Lithium reacted with the cinnamic acid to produce a corresponding chalcone in 75%, 56%, 50%yield, respectively. 2,6-Dimethoxyphenyl Lithium could not react with cinnamic acid,
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文摘:苯基锂、2-甲氧基苯基锂和2，4-二甲氧苯基锂分别与肉桂酸反应以75％，65％，50％的收率生成相应的查尔酮；2，6-二甲氧基苯基锂与肉桂酸不发生反应，但能与肉桂酸甲酯反应生成2′，6′-二甲氧基查尔酮；类似的还制得了2′，4′，6′-三甲氧基查尔酮和2′，4′，4，6′-四甲氧基查尔酮。 |
