arbitrary phase-angle power relay

有功功率继电器,... ... ) arbitrary phase-angle power relay 任意相角功率继电器，有功无功功率继电器 ) Power relay 功率继电器 ...

relay的及物动词，例句求助 -... ... arbitrary phase-angle power relay 有功-无功功率继电器 armature relay 电枢继电器 ...