查询词典 pre-arcing

The study on spectrum analysis of arc sound signal has showed that a signature band of 5-10kHz of sound wave would be generated before fault s arc take place, which is strong in intensity and variable in both width and center depending on arcing electrodes, space between electrodes, and discharge volt age.

早期弧声的功率谱分析表明，故障电弧发生之前，在可听波段产生5kHz~10kHz的电弧声，其带宽和中心频率与电极形状、放电距离、放电电压等试验条件有关。

We also solved problems of WSi_x peel and contact etch arcing to increase product yield,make a contribution for successful mass production.

栅极硅化钨脱落现象与接触孔刻蚀异常放电缺陷的改善，提高了产品的良率，为顺利量产做出了贡献。

In order to improve the catenary-pantograph dynamic characteristics,i.e.let the pantograph follow the catenary to reduce pantograph stray and arcing,the pantograph-catenary contact force should be stable and change within a certain range.

为改善弓网动态特性，使受电弓对于接触网具有良好的跟随性，减少离线和拉弧，必须减少弓网间接触力的波动，使之在一定的范围内变化。

A hybrid breaker can eliminate the conduction loss and need for an arcing contact structure (i.e. virtual arcless switching), but provides minimal system performance advantages.

混合式断路器可消除传导损耗，也不需要弧击穿连接构造，但可提供最小系统操作优势。

Through technical improvement of design of 550 kV/63 kA double-break and 363 kV/50 kA single-break circuit breaker, making use of computer analysis, increasing of the rated pressure of SF6 gas and opening velocity, improving the shape of arcing contact and nozzle, optimizing the structure of interrupter , 550 kV/50 kA single-break dead-tank circuit breaker is developed.

通过对550kV/63kA双断口断路器和363kV/50kA单断口断路器技术加以改进，利用计算机解析技术，提高了额定SF6气体压力和分闸速度，对弧触头和喷口形状进行了改进，优化了灭弧室结构，从而开发出550kV/50kA单断口罐式断路器样机。

Poor contact with the pliers will allow arcing at the jaws, which will damage the pliers and the wire, and rob energy from the intended weld.

与钳子接触不好会在钳子口处产生电弧，这样会损坏钳子和热电偶线，同时还会损耗焊接机的存储电能。

Nozzle due to improper installation, such as threaded is not on tight, equipment, improper adjustment of the gear required to water-cooled cutting torch at work, did not seek pass into the flow of cooling water, and frequent arcing, will cause premature damage to the nozzle.

因喷嘴安装不当，如丝扣未上紧，设备各挡位调整不当，需用水冷却的割炬在工作时，未按要求通入流动的冷却水以及频繁起弧，都会造成喷嘴过早损坏。

This modle incorporates all inherent features of circuit breakers such as arcing time, chopping current ,dielectric recovery.

这个模型融合了燃弧时间、截流，介质恢复强度及断路器的熄弧能力等所有本质特性。

He listened to the sounds of Grotto around him; the rush of river water pouring into the great lake, the songbirds and the day-wings, the ever-active lakeleapers arcing through the air.

他倾听着围绕着他的葛洛托的声音。河水潺潺，注入大湖，鸣鸟歌唱，四处纷飞，总是那样活泼好动的湖跃虫在空中划过一道道弧线。他坐在那儿，一直等到黄昏降临。

One warm morning, a bat fluttered past my head, resting on the clapboards for a moment and then arcing around to the east side of the house.

一个温暖的早晨，一只蝙蝠振翅飞过我头顶，在护墙板上小憩片刻后，又飞成一道弧线直到房屋东侧。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。