交直流两用 meaning in Chinese

alternating-current/direct-current
◇交直流两用 (电动)机 universal motor

Ac dc arc welding machine
交直流两用弧焊机
Two - way receiver
交直流两用收音机
Ac dc air pumps
交直流两用气泵
The digital tube four bearing indications , report to the police the volume to be possible to move the a . c . - d . c , the acousto - optics also reports to the police outlook size : 1712 . 54cm
数码管四方位显示，报警音量可调交直流两用，声光同时报警外型尺寸：