Grundfos have introduced the Grundfos SPO, a new robust 5 inch stainless steel submersible pump designed for use in domestic water supply applications.是什么意思_Grundfos have introduced the Grundfos SPO, a new robust 5 inch stainless steel submersible pump designed for use in domestic water supply applications.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句