往复式活塞液体流量计
oscillating piston liquid meter
液体活塞式鼓风机
liquid-piston rotary blower
液体活塞式旋转压气机
liquid piston rotary compressor
活塞式真空发生器
piston typed vacuum generator
vacuum ejector
piston vacuum generator
内部填塞式活塞泵
internal-packed type piston pump
inside-packed type piston pump
中心填塞式活塞泵
center packed type piston pump
转子活塞式湿喷机
Rotary-piston type wet shotcreting machine
气液活塞泵
gas-liquid reciprocation pump
旋转式液体灌装机
rotary type liquid filling machine