We often use special DC relay to control low powered DC motor in cars.
在汽车中，常常采用特制直流继电器控制小功率直流电动机正、反转。
An experimental investigation of influencing factors on contact bounce of DC relay by using a high-precision laser displacement sensor was presented.
利用高精度激光位移传感器测量直流继电器触头弹跳的特征参数，通过实验研究其影响因素。
By linking the DC relay contactor with power electronic device, the DC hybrid switch apparatus without switching arcing was designed and accomplished.
采用直流开关电器与电力电子器件相结合方式，设计并实现了能够实现无弧通断的直流混合开关电器。
By linking the DC relay contactor with power electronic device, the DC hybrid switch apparatus without switching arcing was designed and accomplished.
采用直流开关电器与电力电子器件相结合方式，设计并实现了能够实现无弧通断的直流混合开关电器。
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