gas-filling valve

• 充气阀

gas-filling valve的用法和样例：

例句

1. Smooth operation of throttle linkage and throttle body air valve.
   节流连杆和节流体空气阀的平稳操作。
2. The large holes on the left and right represent the inlet and exhausting valve ports respectively.
   左右两侧的两个大孔，分别表示进气阀孔和排气阀孔。