靶式流量计target flowmeter科里奥利质量流量计coriolis mass flowmeter电磁流量计electromagnetic flowmeter堰道流量计weirs flowmeter明渠流量计open channel flowmeter孔板流量计orifice plate flowmeter差压流量计differential pressure flowmeter皮托管流量计pitot tubes flowmeter容积流量计positive displacement flowmeters转子流量计rotameter涡轮流量计turbine flowmeter热式流量计thermal mass flowmeter超声流量计ultrasonic flowmeter文丘里流量计venturi flowmeter涡街流量计vortex flowmeter多相流量计multiphase flowmeter热能流量计calorimetric flowmeter复合流量计compound flowmeter医用流量计 medical flowmeter大型管线流量计large pipe flowmeter旋进漩涡流量计vor-tex precession flowmeter刮板流量计scratch flowmeters玻璃转子流量计glass tube float flowmeter