移动元件 meaning in Chinese

moving meter

Devices to prevent pollution by backflow of potable water - pipe interrupter with atmospheric vent and moving element dn 10 to dn 20 - family d , type b
防饮用水回流污染的装置.带大气压力孔和移动元件的管阻流器dn10至dn 20 . b型d系列
Devices to prevent pollution by backflow of potable water - pipe interrupter with atmospheric vent and moving element dn 10 to dn 20 - family d , type b ; german version en 14452 : 2005
防饮用水回流污染的装置.带大气压力孔和移动元件的管