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Abstract： This paper introduced a device for aggregative electric parameters testing of DC voltage relays with a 80C552 SCM as the central processor,and stated its hardware and software flow. 摘要：介绍了一种以80C552单片机为中央处理机的直流电压继电器综合电参数测试装置，简述了其硬件结构和软件流程。
This paper introduced a device for aggregative electric parameters testing of DC voltage relays with a 80C552 SCM as the central processor, and stated its hardware and software flow. 介绍了一种以80C552单片机为中央处理机的直流电压继电器综合电参数测试装置,简述了其硬件结构和软件流程。
Vacuum tubes require DC voltage sources as well. 真空电子管也要求以直流电压为电源。
Frequency drifts due to: DC voltage, temperature, VSWR. 频率漂移跟直流电压、温度、驻波比有关。
PDI also specialize in creating unique cable related OEM products for associated industries, including DC relay activated splitters, regulated DC voltage splitters and other unique passive devices. PDI也专注于相关产业与电缆线相关的OEM产品。包括直流继电功分器，稳压直流功分器和其它独有的无源器件。
When voltage become over the setting value, voltage relay shall be operated. 当电压成为超过设定值，电压继电器应经营。
A plot of dc voltage or current versus time normally produces a straight line. 直流电压或电流与时间的关系图一般成直线.
DC voltage is determined by AC voltage, inductance on the AC side, and load. 直流侧直流电压是由交流电压、电感及负载决定的；
A phenomenon which occurs when excess DC voltage is applied to an LCD. 一现象哪个发生什麽时候过度直流电压被用于LCD。
The DC voltage calibration room is by far the largest of the labs I visited. 直流电压校准室要比我参观过的实验室的大很多。
DC voltage divider can be used to design lower voltage direct current power. 直流分压器集开关电源和电能变换于一身，可以被用来设计降压型直流电源。
Automatic feedwater and constant temperature were realized by low voltage relay. 在电路上采用低电压温控继电器安全设计,实现了自动给水和加恒温控制;
The superior voltage stability of such a Josephson voltage standard has many applications in dc voltage metrology. 此约瑟夫森电压标准杰出的电压稳定性在直流电压计量中可以有许多应用。
If the multimeter is used to measure DC voltage or DC carnet , we must be careful that the polarity is not reversed . 假如用万用表测量直流电压或直流电流，我们必须注意极性不可接反。
If the multimeter is used to measure DC voltage or DC carnet ,we must be careful that the polarity is not reversed . 假如用万用表测量直流电压或直流电流，我们必须注意极性不可接反。
The hardware of the voltage relay are divided into five parts, which are central processing unit, A/D conversion, keyboard display, communication module and execution module. 文中在硬件设计部分将该继电器分为中央处理单元、模数转换模块、键盘显示模块、通信模块和执行模块等几部分进行了详细的论述。
If the multimeter is used to measure DC voltage or DC carnet, we must be careful that the polarity is not reversed . 假如用万用表测量直流电压或直流电流，我们必须注意极性不可接反。
If the multimeter is used to measure DC voltage or DC carnet, we must be careful that the polarity is not reversed. 假如用万用表测量直流电压或直流电流,我们必须注意极性不可接反。
The amount and direction of power flow may be easily controlled by adjusting the DC voltage at the two terminals. 通过调节两换流终端站的直流电压可以容易地控制潮流的数量和方向。
DC capacitor relies on the pulsation of DC voltage, power, inductance on the AC side, and load. 突加负载时直流侧电容是由直流电压波动、功率、电感及负载决定的。