double stage voltage regulator的意思|示意

双节电磁振动式调节器 ... 双金属传感器：BS Bimetal Sensor 双节电磁振动式调节器：double stage voltage regulator 双铰接式摆动轴：double joint swig axle ...

调节电阻 ... double voltage work 双电压工作 double stage voltage regulator 双节电磁振动式调节器 ; 调节电阻 double-voltage motor 双电压电动机 ...