While most of the mass-to-charge ratio differs in 58 u, it can be concluded that the repeat unit of the polyether polyols is propylene oxide.是什么意思_While most of the mass-to-charge ratio differs in 58 u, it can be concluded that the repeat unit of the polyether polyols is propylene oxide.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句