研究与开发

The research and development of chiral compounds has become the hot field and prosperous direction of new drug internationally.

手性化合物的研究与开发已成为新药研究的热点和方向。

This paper is supported by the science and technology program of Beijing-studying and developing the system of communication based train control, thoroughly lucubrate the database maintenance system of CBTC system.

本文以北京市科技计划项目——基于通信的城市轨道交通CBTC系统的研究与开发为背景，对CBTC系统的数据库维护单元进行了深入研究。

Due to a variety of biological activity, benzotriazole derivatives receive wider and wider spread attention about their synthesis as well as the activity research.

苯并三氮唑类衍生物由于具有多种生物活性，关于它们的合成以及活性研究受到越来越广泛的关注，因此，苯并三氮唑及其衍生物的研究与开发具有重要的意义。

The pyrimidine lead compound is obtained via herbicidal activity screen. The optimization of lead compound leads to find the good pyrimidine benzylamine candidates with highly effective herbicidal activity. The novel herbicidal mechanism of pyrimidine benzylamine is put forward. N-(2-bromophenyl)-2-(4, 6-dimethoxypyrimidin-2-yloxy)benzylamine (103-1) has potential as a new selective post-emergent herbicide in oilseed rape.

通过系统的研究工作，发现了具有除草活性的嘧啶先导结构，经结构优化，筛选出具有高除草活性的嘧啶苄胺类优选结构，发现并提出了此类化合物的除草作用新机理，最终经田间试验证实了N-(2-溴苯基)-2-(4，6-二甲氧基-2-嘧啶氧基)苄胺(103-1)可作为超高效油菜田除草剂进行工业性的研究与开发。

Since several dipeptides and tripeptides have been reported to be played the important roles in biophysiological functions, specific peptidyl-peptiases may have great potentialities for use in food biotechnology industry.

由於某些二胜肽及三胜肽被研究报告为具有许多生理功能之活性胜肽，因此，具有将蛋白质水解成特殊小胜肽之分解酶的研究与开发，在食品生物技术领域上具有很大的应用潜力。

At the sametime, with our economy developing rapidly, cars will begin to be used byordinary families.

产品的研究与开发至今仍是广大科技工作者和企业界人事研究和探讨的课题。

Utilizing the topological structural theory,an analysis was carried out on the linking relation and constraint relation between key components of the prototype vehicle suspension frame system.The topological configuration of suspension system was established,and the performance calculation analysis on key compone...

运用拓扑结构理论，对原型车悬架系统关键零部件间的连接关系、约束关系进行了研究，建立了悬架系统的拓扑构型，并对悬架系统关键零部件进行了性能计算分析，为转矩套管式悬架系统的深入研究与开发奠定了理论基础。

This is a review with 27 references on the chemical constituents (volatile and non-volatile components)――monoterpenes,sesquiterpenes, phenylpropanes,flavonoid,quinonoids,alkaloids,cholines and amino acids,etc.of Rhizoma Acori,including Rhizoma Acori graminei and Rhizoma Acori calami.

文摘：菖蒲为较常用中药，具有多种药理及生理作用。含有单萜、倍半萜、苯丙素等挥发油成分及黄酮、醌、生物碱、胆碱、有机酸、氨基酸、糖等非挥发性成分。本文就此对两种菖蒲――石菖蒲和水菖蒲的化学成分研究状况作一综述。以对其进行全面的研究与开发。

The author consults a lot of information and lucubrates the controller, and then develops a new generation of intelligent electric valve speed controller based on much work.

在对其进行研究与开发过程中，查阅了大量资料，并进行了深入细致的理论研究。

The study of Drug Toxicology plays an important role in guiding the research and development of new drugs and in the risk assessment of drugs' toxicities.

药物毒理学研究是指导新药研究与开发，对药物的毒性进行危险性评估不可缺少的重要手段。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。