短語詞組短語oscillating ball meter 往復(fù)球式流量計(jì)Fluid oscillating flow meter 流體振動式流量計(jì)oscillating piston meter 懸擺式活塞流量計(jì)oscillating piston liquid meter 往復(fù)式活塞液體流量計(jì) 返回 oscillating meter