活塞式流量计 [仪] piston-type flowmeter ; piston fluid meter ; piston meter ; piston liquid meter

簇复活塞式流量计 reciprocating piston flowmeter

往复活塞式流量计 reciprocating piston meter ; reciprocating piston flowmeter

筒形活塞式流量计 ring piston meter

旋摆式活塞流量计 rotary piston meter

活塞式计量泵 piston metering pump ; pistontypemeteringpump

往复式活塞流量计 reciprocating piston meter

活塞式变面积流量计 piston type variable-area flowmeter

旋转活塞式流量计 SITRANS FR