litmus
美音:[´lıtməs
]
英音:[´lıtməs
]
n.石蕊
难易程度:
litmus为短语/超纲词汇
litmus
/'lɪtməs; `lɪtməs/
n [U] blue colouring-matter that is turned red by acid and can be turned blue again by alkali 石蕊（蓝色物质, 遇酸变红, 再遇硷则还原变蓝）.
n [U] blue colouring-matter that is turned red by acid and can be turned blue again by alkali 石蕊（蓝色物质, 遇酸变红, 再遇硷则还原变蓝）.
litmus
n[U]
[Date: 1300-1400; Language: Old Norse;Origin: litmosi, from litr 'coloring substance' + mosi 'moss']
a chemical that turns red when it touches acid, and blue when it touches an alkali
[Date: 1300-1400; Language: Old Norse;Origin: litmosi, from litr 'coloring substance' + mosi 'moss']
a chemical that turns red when it touches acid, and blue when it touches an alkali
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