progressing cavity pump的用法和樣例：
例句
- Dry installed progressive cavity pumps with sliding block ts to pump sludge and viscous or highly viscous liquids of communal sewage treatment.
干式安裝螺桿泵帶滑動(dòng)的可閉節可運送質(zhì)淤泥和粘性或高粘性流體，適用于公共污水處理。 - This method bears preferable practicality for track coordinates calculation of moulding milling cutters used for machining the screw rotor in the screw pump.
該方法對加工螺桿泵中螺桿轉子的成型銑刀軌跡坐標計算具有較好的實(shí)用性。
