极性

In this paper, it is proved that the polar signal obtained from the symbolization of an ergodic random signal is stationary and that the autocorrelation function of the polar signal is ergodic.

本文证明了各态历经的随机信号经符号化处理后，得到的极性信号是干稳的，极性相关函数是各态历经的。

Experiment results and theory analysis showed that the rate constants of TDG, ethanol, sulfurous acid, S〓, S〓O〓 and SO〓 increased with the increase of polarity of system, which implied that the activated complexes in the process were more polar than the reactants.

随体系极性增大，TDG、乙醇、亚硫酸、S〓、S〓O〓和SO〓的SCWO反应速率常数增大，表明过渡态活化复合物极性大于反应物。

Hb Memphis: substitutes one uncharged polar residue for another of similar size on the surface.

表面上的一个不带电的极性基团被另一个相似不带电的极性基团取代。

No significant association was found between parents' and their children's unipolar depression.

1.4-667。然而，本研究中在父母单极性忧郁疾患及其子女的单极性忧郁之间并无看到显著关系。

Using the most universal two ways is: one is restricted the unipolarity drive type and another is restricted the frequency multiplication unipolarity drive way.

应用最普遍的两种方式是：受限单极性驱动方式和受限倍频单极性驱动方式。

To eliminate common-mode voltage of cascaded multi-level inverter, three kinds of phase-difference SVM based on left and right bridge vectors are proposed firstly. From these three modulations, equivalent SPWM components are deduced, and the unipolarity and bipolarity of output waveforms are analyzed. 2π/3 PD-SVM (phase-difference space vector modulation) is testified be unipolar.

为消除级联型多电平逆变器的输出共模电压，首先提出了基于左、右桥臂矢量的三类相差空间矢量调制(space vector modulation，SVM)技术，数学推导出三类调制技术的等效正弦脉宽调制(sine pulse width modulation，SPWM)的调制波，并分析了其各自相电压输出波形的单、双极性，证明2π/3相差SVM必为单极性调制。

In DMSO, the polymerization of methyl methacrylate could be carried out efficiently. However the photopolymerization was inhibited in acetonitrile. It was ascribed to the complex formed between coumarin 1 and HTIB photolyzed to unreactive species after irradiation in acetonitrile.

在一般极性溶剂中如DMSO中能有效地引发甲基丙烯酸甲酯光聚合，而在电子受体性质的极性溶剂如乙腈中，光聚合反应受阻，这归结于香豆素1与羟基苯基碘鎓盐形成络合物，使得光反应后生成不具活性的产物。

Based on the developed variable polarity TIG welding power supply ,it establishes variable polarity TIG welding arc multi-information measuring and processing system by adopting memory oscilloscope,high speed video-recorder?spectrograph?welding arc dynamic analyzer and computer.

以研制的变极性TIG 焊接电源为实验平台，采用记忆示波器、高速摄像仪、光谱分析仪、焊接电弧动态分析仪，建立起变极性TIG焊接电弧多信息测试分析系统，同时采集焊接电流、电弧电压、电弧形态和电弧光谱等重要信息，并基于VisualC++语言开发的软件系统对采集的各种信息进行融合及分析。

T.G. Rials, M.P. Wolcott, and D.j. Gardner. 1994. Characterizing the Wood Fiber/Polymer Interface. Techniques in Experimental Mechanics Applicable to Forest Products Research.

阎昊鹏，秦特夫，1999，木材表面非极性化原理的研究Ⅱ，木材与苯乙烯接枝共聚过程中化学官能团和表面极性的变化，木材工业，13(6)：19-21

The demulsification mechanism of PAMAM belongs to displacing mechanism. Acylamino groups of PAMAM of integral having strong polarity can take place chemical adsorption with the materials of strong polarity in the exterior of oil drop and be participated in into the membrane, which will result in adsorbed crude surfactant and other active materials to be partially displaced and reduce the intensity of interfacial film between oil and water.

其机理是由于整代的PAMAM具有强极性的酰胺基团，能与油滴表面的强极性的物质发生化学吸咐作用，参与成膜，能把原来吸咐的天然活性剂分子和其它活性物质部分顶替，削弱油水界面膜强度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。