隔膜密封压力计
diaphragm seal pressure gage
滚动式液膜密封装置
rolling liquid sealing apparatus
密封膜片容积式液位传感器
diaphragm sealed displacement transmitter
橡胶膜密封干式储气罐
flexible rubber seal gasholder
挠性不锈钢密封盒
flexible stainless-steel bellows
精密密封聚苯乙烯电容器
fine sealed polystyrene capacitor