查询词典 dispersion

Graduate University of the Chinese Academy of Sciences, Beijing 100039, ChinaThe partial dispersion of some typical glasses working on near infrared band was calculated with the formulas in which P and V were modified. The apochromatism of a wide band system was designed and analyzed.

利用修正的部分色散和阿贝数公式，计算一些典型的普通光学玻璃在450nm～950nm波段的色散特性，应用二级光谱理论，采用普通光学材料，设计了一个复消色差系统，分析近红外波段光学系统的二级光谱特性及校正方法，给出设计实例。

It is found that for a certain mode-locked solid-state laser with a pulse profile of sech2(1.763t/τ),the jitter is approximatively a linear function of the net group delay dispersion,and turns to be larger with increasing GDD ;however,it cannot be reduced to zero even if the GDD is completely compensated.

结果表明：对于一台脉冲轮廓为sech2(1.763t/τ)的确定的锁模固态激光系统，时基抖动近似为净群速延迟色散的线性函数，且随着GDD的增加而变大；然而，即便在GDD被完全补偿的情况下，时基抖动也不会是零。

To investigate the role of transmural dispersion of repolarization and cardiac restitution properties in arrhythimogeneity in LQT2, we observed the effects of d, 1-sotalol, hypokalemia and calcium channel blocker on TDR and cardiac restitution properties at different basic cycle length by using the arterially perfused rabbit left ventricular wedge preparation.

为探讨心室跨壁复极离散度和动作电位时程恢复性质的变化在LQT2室性心律失常发生中的作用，笔者采用冠状动脉灌注的兔左室肌楔形组织块制备LQT2模型。标本随机分四组：对照组；LQT2模型组（100 mol/L d，1-sotalol灌流）；模型+低钾(3 mmol/L)组和模型+低钾+维拉帕米(2 mol/L)组。

S. Pal Arya, Air pollution meteorology and dispersion, 1999, Oxford University Press

S。 Pal Arya，空气污染气象和扩散， 1999，牛津气象出版社

A model is suggested to explain the changes in the dispersion and electron state of Pt particles. Autoreduction of Pt〓 ions is found directly by means of CO-IR and TPR methods.

实验中发现了载Pt化合物中的NH〓配体在解离后吸附于β沸石酸性位上导致Pt〓的自还原作用，进而发生Pt粒子聚集使其分散度降低。

The occurring of autoreduction of Pt〓 ions is avoided in L zeolite, therefore the dispersion and aromatization reactivity of Pt/L zeolite is superior to that of Pt/β zeolite.

二。同样研究载Pt化合物在L沸石上的分解，发现Pt〓离子不被自还原，因而Pt粒子能保持较高的分散度，芳构化性能也更为优异。

The occurring of autoreduction of Pt〓 ions is avoided on L zeolite, therefore the dispersion and aromatization reactivity of Pt/L zeolite is superior to that of Pt/β zeolite.

二。同样研究载Pt化合物在L沸石上的分解，发现Pt〓离子不被自还原，因而Pt粒子能保持较高的分散度，芳构化性能也更为优异。

Ideological And Political Education in the Rural Areas is influenced by diversity of economic factors, dispersion of social life, avianization of the village-level-organization"s function, division of peasants" roles and complication of the international situation.

农村思想政治工作面临着经济成分多样化、社会生活分散化、村级组织功能弱化、农民角色逐步分化以及国际环境复杂化的冲击，存在一些亟需解决的问题。

The main purpose is to observe the dispersion effects of NaP and azeotropic distillation processing.

主要观察NaP和共沸蒸馏方法的效果。

By the testing means of electron-spectroscopy for chemical analysis , thermogravimetric analysis , differential scanning calorimetry , transmission electronmicroscopy , the results have shown that the emulsion polymerization in situ in the presence of nano-particle of calcium carbonate can happen smoothly and successfully and the surface of nano-particle of calcium carbonate have been capsulated by polymer of acrylates, which prevent from the agglomerating of nano-particles of calcium carbonate. Because the copolymer of acrylate has good compatibility with some plastics such as PVC, ABS, AS and so on, so the dispersion of nano-scale calcium carbonate as nanometer size in these plastics can be reached more easily and the effects of nanometer can happen.

通过X射线光电子能谱、热失重分析、动态扫描量热分析、透射电子显微镜等手段，证实在纳米碳酸钙原生粒子存在下，可以进行丙烯酸酯类的原位乳液聚合，乳液聚合顺利，纳米碳酸钙表面被丙烯酸酯类聚合物所包覆，使纳米碳酸钙粒子间的团聚不易发生，同时由于丙烯酸酯类聚合物与PVC、ABS、AS等极性聚合物具有较好的相容性，从而使纳米碳酸钙在聚合物基体中能达到纳米状态分散，从而发挥纳米效应。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。