The suction-stage, middle-stage, discharge-stage, diffusor and bearing support forms a working chamber and shaft, impeller, balance kettle and shaft sleeve are pump rotor parts.是什么意思_The suction-stage, middle-stage, discharge-stage, diffusor and bearing support forms a working chamber and shaft, impeller, balance kettle and shaft sleeve are pump rotor parts.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句