amphoteric materials 中文意思是什麼
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The technological developments of four types surfactants, anionic, nonionic, cationic and amphoteric surfactants, and two types raw materials are reviewed, and the development trend of surfactant industry is discussed
摘要綜述了陰離子、非離子、陽離子、兩性離子類表面活性劑及其兩種主要原料（直鏈烷基苯磺酸鹽、脂肪醇）的技術進展，概述了表面活性劑的發展方向。
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