介绍一种由筒形活塞无油泵、交直流两用电动机、自动液面控制系统、防噪声和减震装置等组成的新型便携电动吸引器装置。
This paper introduces a new type of portable power-operated aspirator which is composed of tubular piston oilless pump , universal motor , automatic liquid level control system , noise proof and vibration absorptive devices and so on .
交直流两用电动机