phenol phthalein

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phenol phthalein的英文翻译是什么意思，词典释义与在线翻译：

英英释义

名词 phenolphthalein:

1. a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8