极性的

Tourmaline that has spontaneous polarizability, pyroelectricity and piezoelectricity can beused in many areas, for instance, electromagnetic shield, air purification, etc, therefore, differentspecies of tourmaline, Dravite occurring in pegmatites from Hebei that are different ingranularity and Schorl from Xinjiang that are different at heattreatment temperature and undercondition are tested accurately and studied in this thesis.

电气石具有自发电极性、热释电性和压电性，可应用于多个方面，如电磁屏蔽、空气净化等，为此，本文精确测试和研究了不同种属、不同粒径以及不同温度和条件下热处理电气石粉体的Zeta电位。

This paper argues that Soh's (2007)ΣP analysis only partially explains polarity operation in Mandarin VP-ellipsis.

本文论证Soh(2007)之ΣP分析，只能解释汉语动词删略句中极性运作的部分事实。

The excitation source is similar to a square wave signal.

研究了基于双极性脉冲电流激励原理的微弱电导测量技术。

The problem of photophysics, spectrum and photo-isomerization of bisbenzoxadyl stilbene in different solvents were studied carefully.

对双苯并唑茋化合物在不同极性溶剂中的光谱、光物理及光顺反异构化问题进行了详细研究。

The polarization of the EW component of the telluric field inverse.

大地电场EW分量的极性变化。

The strong extension and random curling of HA molecule result in tremendous domain, the hydrodynamics volume is ten times larger than the possessing space of its un-hydrated form. Further more, molecule chains twist between each other to form a consecutive reticular structure, which reacts with water molecule via polar bond and hydrogen bond.

HA分子在溶液中高度伸展和随机卷曲构型使其占有很大区域，其流体动力学体积较未水化时所占空间大l0倍，而且分子链之间相互缠绕形成连续的网状结构，水分子通过极性键和氢键与其直接作用。

The experimental study on electrohydrodynami influence on boiling heat transfer with R123 under different polarities in uniform electric field was presented.

利用电水动力学技术对工质R123进行了均匀高压电场下电场极性对池沸腾换热影响的实验研究。

After compared, the unipolar SPWM control strategy is selected.

经过比较，选用了实际滤波效果较好的单极性SPWM控制策略。

Is there a visual aid which will identify the locations and polarity of placed parts?

是否有可视性辅助工具或其它工具用于识别已经贴片部分的极性和位置？

In this diagram, a voltmeter with a separate bipolar current source is used.

在该图中，使用了一个电压表和一个分离的双极性电流源。

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。