您要查找的是不是：
- The reasons why reverse current protection is not necessary in rectifiers of direct current traction substation are described. 摘要通过分析，阐述了直流牵引变电所内的整流器不必设置逆流保护的理由。
- non directional current protection 非方向电粒护装置
- On direction validity of 110 kV zero-sequence directional current protection 对110 kV零序方向电流保护方向正确性的讨论
- A device used to convert direct current into alternating current. 反用换流器用于变直流电为交流电的仪器
- directional current protection 方向电流保护装置
- Direct Current Governor System M? 直流调速系统?
- Direct Current Plasma Emission Spectrometer DCP M. 直流等离子体发射光谱仪。
- Alternating current,direct current. 交流电，直流电。
- Alternating current, direct current. 直流电，交流电。
- It also wks well under a low direct current. 在直流低电流下使用，很受欢迎。对于管道以及细小部件的焊接，继续焊接及特定数目焊接更具优势。
- Direct current, to protect their U.S. dollar assets in order to reduce losses. 当下直接的问题，要维护好自己的美元资产，以减少损失。
- A device, such as a diode, that converts alternating current to direct current. 整流器; 整流管一种将交流电流转化为直流电流的装置，如二极管
- A new type of over current protection system of MCCB was Introduced. 介绍了一种新型塑壳断路器的过电流保护系统。
- Direct current cannot use transformers to change voltage. 直流电就不能用变压器来改变电压。
- How Improve The Influence of Direct Current Drive on The LCD? 如何改善直流驱动对液晶显示器的影响?
- Inverse time current protection is judged by calculating the RMS of current and adding up heating effect. 长延时采用计算电流真有效值,累计热效应判别。
- A device for converting alternating into direct current. 把交流变为直流的器件。
- Instead, pages adopt the current protection level of the database whenever they are written next. 相反,每当下一次写入时,这些页才会采用数据库的当前保护级别。
- A generator, especially one for producing direct current. 发电机发电机，尤指能产生直流电的那种
- The units are available for either alternating or direct current. 这些装置既可以用交流电，或可以用直流电。
