短語(yǔ)詞組短語(yǔ)quaternary ammonium cationic ion 季銨型陽(yáng)離子Ammonium kan ion concentration 銨根離子濃度ammonium m ion 銨離子Ammonium ion concentration 銨根離子濃度ammonium ion selective electrode 氨氣敏電極quaternary ammonium ion 季銨鹽measurement of ammonium ion 銨離子測(cè)定quarternary ammonium ion exchange 季銨型離子交換樹脂 返回 ammonium ion