查询词典 atomic clock

It is shown that in complex system like L-tyrosine, using a locally dense basis set with a large number of atomic basis functions for the carbon atom of interest and smaller sets of atomic functions for the other atoms can not only save the disk capacity and computing time but also produce satisfactory results.

由从头计算获得的结果与实验值符合较好，说明对于具有复杂结构的多原子体系，对杂原子使用较小的基函数，而对所关心的碳原子使用较大的基函数以提高计算精度，这样可以达到既节省计算机空间与计算时间而不影响计算精度的目的。

Subsequently, in August 1949 the former Soviet Union also conducted an atomic test in October years .1952 3, United Kingdom, in February 1960, France, October 16, 1964 China has conducted an atomic test, breaking the U.S. nuclear attack off .1950 10 31, the United States conducted in liquid deuterium to hydrogen fuel for the heat theory test, but a nuclear device is very bulky and can not be used as weapons .1953-year in August, the former Soviet Union conducted in order to solid-state lithium deuteride -6 for the hot nuclear fuel hydrogen bomb test, so that practical hydrogen bomb is possible.

随后，1949年8月原苏联也进行了原子弹试验。1952年10月3日英国、1960年2月法国、1964年10月16日中国先后进行了原子弹试验，打破了美国的核袭断。1950年10月31日，美国进行了以液态氘为热核燃料的氢弹原理试验，但核装置非常笨重不能用作武器。1953年8月，原苏联进行了以固态氘化锂－6为热核燃料的氢弹试验，使氢弹的实用成为可能。

The atomic force microscopy.It has been used to image the living cells and localize the cell surface ultra structure under near physiological conditions by perfect atomic resolution,was also utilized in the biological process,interactions between druggery and cells,was an important instrument for the study of cell biology.

原子力显微镜，能够在接近生理条件下以具有原子级的分辨率对活细胞进行表面成像和超微结构观察，同时可以研究细胞的生物过程、细胞与药物之间和细胞之间的相互作用，成为细胞生物学研究的一种有效工具。

According to related theories,the ultraviolet spectrum of atomic materials,especially the electron energy transition around alkali metal atomic nucleus is analyzed and calculated,and the spectral line data is listed in this paper.

根据相关理论，重点对原子紫外光谱，尤其是碱金属原子核外电子的能量跃迁进行了分析和计算，列出了计算的谱线数据。

Based on the theory of atomic spectroscopy,a double line of atomic emission spectroscopy is used to measure the temperature of explosion products of aluminiferous emulsion explosive continuously.

根据原子光谱学理论，利用原子发射光谱双谱线测温系统对含铝乳胶炸药的爆炸产物温度进行了实时测量，获得了爆炸产物瞬态温度-时间分布曲线，分析了不同配比炸药造成爆炸产物温度出现差异的原因。

To build this file system, an atomic updating algorithm and a mult－buffer coheront policy are presented. Based on time－stamp, using variable－size blocks of files, the atomic updating algorithm controls the modification operations on the replicated files.

所设计的分布式文件系统用来支持分布式全局进程调度，它具有如下特点：（1）既支持分布式单副本文件的管理、又支持分布式多副本文件的管理；（2）被访问的文件数据缓存在客户侧结点机；（3）文件互斥访问的粒度为变长访问块；（4）提供全局一致的文件命名空间和透明文件访问能力；（5）支持用户在系统中任一结点机注册；为实现本文件系统，笔者提出了原子更新算法和多缓存一致性策略。

By introducing the concepts of atomic type and atomic attribute, MEDV was applicable to various molecular structures which contain the multiple bonds and heteroatom.

通过引入原子属性和原子类型的概念构建的MEDV，适用于描述含多个杂原子、饱和键与不饱和键、环和非环等分子结构特征。

Atomic implies indivisibility and irreducibility, so an atomic operation must be performed entirely or not performed at all.

这里"原子"的意思是看不见和不可分，因此原子操作要么必须全部做完，要么一点也不做。

If only the interatomic force are considered, atomic stress amounts to the potential density in the resultant force field generated by the neighboring atoms, and atomic elastic constants equals to the potential density increment in the same resultant force field.

如果只考虑原子间作用力的影响，原子应力等于该原子在周围邻域原子合成张量力场中的势能密度，原子弹性常数等于发生单位应变时原子在邻域原子合成力场中势能密度的增量。

Atomic implies indivisibility and irreducibility, so an atomic operationmust be performed entirely or not performed at all.

这里"原子"的意思是看不见和不可分，因此原子操作要么必须全部做完，要么一点也不做。

After explaining total design of automated test system for microcircuit , the thesis introduces GPIB standard .

文章在说明了微电路模块自动测试系统的总体设计后，对GPIB标准进行了介绍。

He interceded in my behalf.

他替我说情。