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Its control object is a plate with two mutually perpendicular shafts, and its purpose is to balance a freely rolling ball in a specific location or to make it move following the specific trajectory on the plate.

其控制对象是具有2个相互垂直的旋转轴的板，目的是让一个自由滚动的球能够平衡在板上的特定位置，或使其沿着特定轨迹运动。

On the analysis foundation for the at the same time generator control law of permanent magnetisms have discussed the at the same time generator word of permanent magnetism of niter quantity to melt the function of every control son modular in control system and the specific ay of realizing, have put forward a set of at the same time generator word of permanent magnetism of entire quantity to melt the specific enforcement of control scheme, and according to this set of scheme having established the synchronous generator of permanent magnetism based on Simulink the word of entire quantity melts to control emulation model, for the control made scheme emulate to analyses.

在对永磁同步电机控制规律的分析基础之上，讨论了永磁同步电机全数字化控制系统中各个控制子模块的功能和具体的实现方式，提出了一套永磁同步电机全数字化控制的具体实施方案，并根据这套方案建立了基于 Simulink的永磁同步电机全数字化控制仿真模型，对所出的控制方案进行了仿真分析。

They are often morphologically distinct from A chromosomes, being smallerand more highly heterochromatic in most cases. B chromosomes do not pair with Achromosomes, and they are inherited in a non-Mendelian way, exhibiting meiotic andmitotic instability and nondisjunction. However, B chromosome DNA is quiteidentical to the corresponding sequence on the A chromosome complement. So far afew B chromosome specific DNA sequence have been identified. Specific DNAsequences on B chromosome have been the attractive research area on Bchromosomes.

现已在千余种植物和近三百种动物中被发现。B染色体与物种中正常染色体不同：独立于整倍体基因组之外，减数分裂时不与A染色体发生联会和配对，细胞分裂后期不分离，非孟德尔遗传，富含异染色质，不含对宿主主要性状有影响的基因等。B染色体DNA的分子组成既与A染色体极为相似，具有A染色体DNA分子组成的一般特征：富含重复序列和转座成分，染色体三大功能组件DNA高度同源；又与之相区别，含有B染色体特异的DNA序列，这些DNA序列可以为探讨B染色体的起源和进化提供有价值的信息。

A new idea for specific surface area standard reference materials which are made of nonporous mono-disperse SiO2 spheres and the true specific surface area can be calculated accurately from their diameters is presented.

提出一种新型比表面积标准物质的研究思路，即用无孔的单分散SiO2微球作为比表面积标准物质的材料，它的"真实"比表面积可以通过对其粒径的准确测量，用几何的方法计算出来。

Then the materials were characterized by XRD, FT-IR, SEM, thermogravimetric analysis, and N2 adsorption-desorption experiments. It turned out the sample possessed ordered hexagonal mesoporous channels, high specific surface area of 1207 m2/g, high specific pore volume of 1.03 cm3/g and narrow pore distribution between 2~3nm.

通过 X 射线衍射、傅立叶转换光谱、扫描电镜、热重及低温氮气吸附-脱附试验等测试方法对样品进行了表征，表明该条件所合成的样品具有规整有序的六方介孔孔道，较大的比表面积(1207m2/g)和比孔容(1.03cm3/g)，孔径大小分布窄(2～3nm)，为高质量的 MCM-41 介孔分子筛。

When these coefficients are quadratic functions of the porosity, specific constituent orthogonal weighting coefficients are derived from these orthogonal conditions along with a discussion about how to extend the applicable range of the constituent orthogonal weighting coefficients in the orthogonal coordinates. Based on the combination of the theory of critical porosity and the constituent model, it presents a specific example of the constituent model that includes two transforming points. The reasonability of above-mentioned theories is shown by comparison of theoretical calculations and measured data on effective elastic moduli of clean sandstone or sandstone analogs saturated with pure water.

再次，结合弹性模量组分关系方程与正交基函数理论，推导组分加权系数的正交条件；基于正交条件，提出组分加权系数为孔隙度二次多项式时正交组分加权系数的构造方法以及正交组分加权系数适用范围的拓展方法；结合临界孔隙度理论，提出一个基于两个状态分界点的组分模型实例；比较组分模型的计算结果与前人关于砂岩弹性模量的实验结果，证明了组分孔隙介质模型理论的合理性。

Spag4l and Papolb were down-regulated from pachytene spermatocytes to elongating spermatids, decreasing 45% and 34%, respectively. The results not only demonstrate the stage-specific expression of these genes, but also provide new data for further investigations into the functions of these specific genes during spermatogenesis.

结果提示，被检测的基因具有明显的阶段特异性表达特征，为深入研究这些基因在小鼠精子发生过程中的作用提供了新资料，同时也为荧光定量PCR技术在精子发生相关基因定量表达研究中的可行性提供了充分例证。

Then, the specific activities of protease and amylase were relatively lower than pancreatin separating with acetone, but the specific activity of lipase was higher. The ratio of activities in filtrate were very low, showing the precipitation was effective.

其中蛋白酶和淀粉酶的活力较低，与丙酮胰酶(3159U/g和58.7kU/g)相比有较大的差距，但是脂肪酶活力较高，高于丙酮胰酶的50.10kU/g。

The general phenomenon of perceptional information processing of specific column mappingthe specific attributes of sound was described by qualitative-mapping method.

运用定性映射的方法，描述了皮层中特定的功能柱对特定的声音属性进行反应这种感知觉信息处理的普遍现象。

Pettit accordingly confines himself to objecting that what Paley fails to recognize is that the neo-roman writers seek only a specific kind of security,and seek it only against a specific kind of interference.See Pettit1997,pp.73-4.But cf. Pettit1997,p.5,where he more forthrightly declare that persons'subject to arbitrary sway'are'straightforwardly unfree'（第二章注释52,p.82

因此，佩迪特将自己仅仅局限于如下的反对理由，即佩利没有认识到新罗马作家仅仅寻求一种特殊类型的安全，并通过反对一种特殊类型的干涉来寻求它，参见Pettit1997，pp.73-4；但他又更加直率地断言，'屈从于专横支配的'人'是完全不自由的'，见Pettit1997，p.5。

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。