查询词典 atom structure

For any substance, the number of atom s or molecules in a mole is Avogadro's number (6.02 ′ 1023) of particles.

对于任何物质，一个莫耳里的原子或分子数是粒子的亚佛加厥数(6.0221367×1023)。

In chapter 5,we introduce the De Morgan algebra of metric and investigate the pseudo-metric Uniformity and the pseudo-metric topology and the separation axioms in De Morganalgebra of metric.We establish the Baire category theorem and the Banach contraction theo-rem,the Edelstein contraction theorem and other fixed quasi-atom theorems in De Morganalgebra of metric.In final,we give a sufficient condition for the metrization of a De Morganalgebra of topology.

在第五章里，我们地德摩根代数中引进了伪度量，探讨了伪度量一致和伪度量拓扑以及德摩根度量代数的分离公理，得到了Baire范畴定理、Banach收缩定理、Edelstein收缩定理以及其它不动拟原子定理，最后给出一个德摩根拓扑代数可度量化的充分条件。

The spatiotemporal spectral line intensities of the first three atomic lines in Hydrogen Balmer series (λ=656. 28, 486. 13, 434. 05nm) of RF ion source plasma, are measured with calibrated Optical Multichannel Analyzer . Some plasma parameters, including electron temperature, hydrogen atom density and hydrogen ion density, are calculated and analyzed Using Partial Local Thermodynamic Equilibrium theory and Abel transform.

实验采用绝对定标后的光学多道分析系统测定了离子源等离子体不同时间和空间位置的氢原子巴耳末谱线系中前三条谱线（λ=656.28，486.13，434.05nm）的强度，并采用PLTE的理论和Abel变换方法，计算出了高频离子源等离子体的电子温度、氢原子浓度、氢离子浓度等参数在放电的不同阶段和径向分布情况，并进行了简要分析。

No matter what substance it may be, it is made up of atom.

不管这是什么物质，都由原子构成。

Such a method can replace traditional reaction with phosgene as the carbonylation reagent, involving the toxic reagent and drastic reaction conditions, the new herein studied method is environmentally benignancy and has atom economical selectivity.

它可代替以往的利用光气来给化合物引进一个羰基的方法，具有原子经济反应的高选择性和对环境的友好性，从而越来越受到人们的关注，已成为C〓化学中羰基合成领域的一个重要的研究热点。

Because they have one nitrogen atom with lone pair electrons, benzimidazole compounds are endowed with capability of complex and molecular recognition and they can analogue biological molecule.

苯并咪唑具有一个含孤对电子的氮原子，从而使苯并咪唑类化合物具有很强的配位能力及分子识别能力，可以用于生物分子的模拟。

In order to improve the catalytic activity, A series of bident ligands containing nitrogen atom were prepared by design, such as bipyridine derivatives, phenantroline derivatives, Schiff base of bipyridine etc.

为了提高催化活性，设计合成一系列含氮双齿配体，如联吡啶衍生物、邻菲罗啉衍生物、含吡啶席夫碱等。

A nucleus is about one thousand billionth the size of an atom.

原子核的体积大约是原子的一千兆分之一。

A nucleus is about one billionth the size of an atom.

原子核的大小约为原子的十亿分之一。

A nucleus is about one tho北美nd billionth the size of an atom .

原子核的体积大约是原子的一千兆分之一。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。