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The deductive method of atomic spectral terms for equivalent and nonequivalent configurations is the key part of the study of quantum chemistry, structural chemistry and atomic physics.

等效组态和非等效组态原子光谱项的推求方法是量子化学、结构化学和原子物理学研究的重要内容。

Using the method we presented here, the spectral terms of the p3sd and d2f3 nonequivalent configurations are derived as an example, all the results are in consistent with literature.

文中举例应用该方法，具体推求了非等效组态p3sd，d2f3在L-S耦合下的光谱项，所得结果与文献给出的一致。

The main idea is to lift the band degeneracy at high symmetry points in the Brillouin zone of crystals by lowering the structure symmetry of crystal. One way is introducing nonspherical atom configurations, another is introducing anisotropy in atom dielectricity.

设计的核心思想是通过降低光子晶体结构的对称性，消除光子能带在晶体的布里渊区高对称点上的本征简并，以获得完全的带隙我们采用两种方法，一种是将晶体的原子做成非球对称，另一种用各向异性的颗粒球做晶体原子。

How to prevent the aging of electrodes is important topic. This thesis novelly proposes to deal with this troublesome problem by using different materials and configurations for EHD driving electrodes.

因此基於防止电极老化之研究动机，本论文率先提出以不同电极材质或构形，来克服此一棘手问题，而使得电液体微帮浦可以长时间运作，并增加流量。

In order to obtain viable tetraploids, which remains a major challenge worldwide, research on spindle organization and chromosome behavior was carried out mainly in zhikong scallop, Chlamys farreri, a typical commercially important species which is being cultured in North China Sea. Immunofluorescent technique and laser scanning confocal microscopy has been developed for observation of both microtubule organization and chromosome segregation. Orcein squash method was also used for chromosome observation. A series of complicated configurations of the meiotic spindle and associated patterns of chromosome segregation, including tripolar and seperated bipolar segregation, were found in developing eggs following the inhibition of the first polar body.

为了攻克可存活四倍体人工培育技术的国际性研究难题，本研究选取了我国北方海区的典型经济贝类栉孔扇贝为主要研究对象，建立了一套免疫荧光染色和激光扫描共聚焦显微技术，结合使用染色体地衣红压片观察技术，对第一极体受抑制的受精卵的减数分裂纺锤体装配、染色体分离动态进行了研究，发现了一系列特殊的纺锤体装配及相应的染色体分离行为，包括三极分离、独立二极分离等分离类型，从亚细胞水平上阐明了四倍体形成的细胞学机理。

Both manual and pneumatically actuated configurations are available.

它还有手动和气动启动结构可供选择。

It uses the latest technologies from Microsoft but it's brave enough to say NO to some of the of the current 'establishment' principles, like POCO, SOA, and complex XML configurations.

它使用来自微软（LINQ的，周转基金，WPF）的最新技术，但它敢于说不本届'建立'的一些原则，如波苏，SOA和复杂的XML配置。

This provides the facility to change stylus configurations either manually or automatically without the need for requalification of the stylus tips, thereby giving significant time savings in inspection routines.

可简单实现手动或自动更换测针，而不需重新校正测针系统，从而大大节省测量所需时间。

Through a single shot experiment powered by a constant voltage charging device,it is found that when discharging in N2,the generator has the same output waveforms for both isolation configurations;but when discharging in SF6,it has a faster rise time for the resistively isolated configuration than that for the inductively isolated configuration,and the reason for this phenomenon was analyzed preliminarily.

通过恒压源充电的单次实验发现，发生器在氮气(N2)中工作时，两种隔离方式的输出脉冲波形基本一致，然而在六氟化硫(SF6)气体中工作时，电感隔离型相对于电阻隔离型的输出脉冲前沿较慢；对其原因做出了初步分析。

It obtained the 3D CAD configurations of the grinder parts based on the product modeling, proposed and adopted four modeling methods such as parameterization, skeletonization, scanning and data conversion etc., studied and implemented the automatic transmission of data between isomeric CAD and CAE systems based on specific software platforms.

实现了基于反求工程造型的磨床零件三维CAD造型，提出并应用参数法、骨架法、扫描法和数据转换等四种建模方法，基于具体的软件平台，研究并实现了对异构CAD与CAE系统间数据的自动传递。3。

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。