differential piston-type switch
活塞式变截面流量计
piston-type variable area flowmeter【仪】
暂无补充释义。
相关词条
piston-type flowmeter
piston-type accumulator
piston-type meter
reciprocating pump (piston-type pump)
piston-type cryogenic liquid pump【机】
piston-type flowmeter【仪】
piston-type cylinder【机】