Ammonium transporters are a kind of active ion carriers existing as a kind of transmembrane protein with proposed molecular weight of about 48 kDa.是什么意思_Ammonium transporters are a kind of active ion carriers existing as a kind of transmembrane protein with proposed molecular weight of about 48 kDa.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句