击穿

Its structure and property have not been understood clearly. Polyimide wear-out and breakdown can occur under long-term electric stressing due to many different reasons, making their insulating life ended. Wear-out and breakdown of polymers are closely related to the dissipation of electrostatic energy in space charge region.

聚合物的老化和击穿与空间电荷区域静电能的释放有关，电致发光代表材料中分子受激的化学活性强的状态，是能量耗散的方式之一，可作为材料预击穿及结构老化的先兆，是研究聚合物分子中的陷阱结构和它所控制的空间电荷的存贮和输运特性的重要实验手段。

At this point the zener diode conducts current in the revese direction, which maintaining the zener voltage across its terminals .

此时齐纳击穿两极管引导 revese 方向的涌流，维持横过它的终端机的齐纳击穿电压。

The US 76 mm gun, if firing the APCBC M62 ammunition, could penetrate the Tiger frontally out to just over 500 m, and could be at ranges in excess of 1,000 m to achieve penetration against the upper hull superstructure.

美国76mm炮，如果发射APCBC M62彈藥，可以恰好在500米击穿虎式正面，也能够在超过1000米的距离上实现对首上上部的击穿。

At last, arc reignition characteristic is defined for multiple-narrow slot chamber, and the mechanism of arc reignition process is analyzed. A mathematical model which forecasts the arc reignition process is improved for the first time by combining the striking theory of cathode layer with"black box"model for forecasting arc thermal reignition.

最后，通过试验确定了多纵缝陶土灭弧室中电弧重燃特性，对其机理进行了研究，并首次将阴极层击穿理论和预测电弧热重燃的黑盒模型相结合，建立了模拟陶土灭弧室中弧隙由电击穿到热重燃过程的电弧数学模型。

By discussing the influences of restriking phenomena, some effective methods are presented for restraining restriking phenomena and improving the performance of current limiting.

通过分析影响开断过程电弧重击穿现象的主、要因素，本文提出了几种抑制开断过程重击穿现象、提高断路器限流特性的有效方法。

On the basis of trap theory for dielectric breakdown in polymer the role of charge injection in the treeing breakdown process has been explained. After detailed experimental study in laboratory, first 110kV cross-linked polyethylene power cable with-charge emission shield is designed and developed in our country.

本文在根据聚合物击穿的陷阱理论，阐明了聚合物击穿过程中电荷注入的关键作用之后，在大量的实验室研究工作的基础上，设计和制造了我国第一条110kV带电荷发射屏蔽层的交联聚乙烯电力电缆。

Double series PIN diodes operates at a hold-off voltage of 4.2 kV, and the dV/dt is promoted from 1.7 kV/ns to 2.3 kV/ns.

对于这种特殊的硅二极管结构，在它上面加一个很快的冲击电压，当冲击电压高于二极管的直流击穿电压时，二极管不会立刻击穿，会有几 ns的延迟。

Stacked PIN diodes in parallel and series operate at a hold-off voltage of 8.0 kV,and the dV/dt is promoted from 2.4 kV/ns to 3.2 kV/ns. Delayed breakdown device ; PIN diode ; Delayed breakdown

因此在输入脉冲 dV/dt很快的情况下，二极管会产生很高的过压，这时空间电荷区的电场强度远远大于雪崩击穿的临界场强，电子和空穴的电离率非常高，导致二极管在很短的时间内击穿，这个现象被

The influence of impulse voltage waveshape on particle-initiated breakdown voltage of a GIS system in SF6 and SF6/Air mixtures is reported. The results are compared with the characteristics of air gaps. For the SF6 gaps, breakdown voltage depends on wave-front duration but almost independs on wavetail duration. For the gaps in SF6/Air mixtures, the influence of impulse waveshape also depends on SF6 contents and electrical field non-uniformity

作者研究比较了正极性冲击电压波形对SF_6、空气、SF_6/空气的 GIS 电极装置由固定导电微粒引发的击穿电压的影响，结果表明：SF_6间隙的击穿电压受冲击电压波前时间长短的影响较大，而与波长的关系不大，当采用SF_6/空气混合气体时，则这种影响随SF_6含量增大而愈明显，并与电场不均匀程度有关。

Have discussed liquid dielectric breakdown theory and sundry factors influencing liquid dielectric breakdown voltage, and put forward electric spark discharge model.

论述了液体电介质的击穿理论，分析了各种因素对液体电介质击穿电压的影响，提出了电火花放电模型。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。