从某些地衣中提取的染料,当pH值高于或低于特定临界水平时会变色。
litmuses — plural of litmus
对任何属性的简单测试；试金石。；石蕊；[化] 石蕊
从某些地衣中提取的染料,当pH值高于或低于特定临界水平时会变色。
A dyestuff extracted from certain lichens, that changes color when exposed to pH levels greater than or less than certain critical levels.
使用石蕊(通常为石蕊试纸)检测液体酸度的简单测试。
A simple test of acidity in a liquid using litmus, usually in the form of litmus paper.
对任何属性的简单测试；试金石。
A simple test of any attribute; a litmus test.
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