Dry installed progressive cavity pumps with sliding block ts to pump sludge and viscous or highly viscous liquids of communal sewage treatment.是什么意思_Dry installed progressive cavity pumps with sliding block ts to pump sludge and viscous or highly viscous liquids of communal sewage treatment.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句