The main components of SBM pump are listed as follows: lower half casing, upper half casing,impeller, shaft,wearing rings,shaft sleeves, bearing housings and couplings.是什么意思_The main components of SBM pump are listed as follows: lower half casing, upper half casing,impeller, shaft,wearing rings,shaft sleeves, bearing housings and couplings.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句