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litmus

/ˈlɪt.məs/

翻译: 一种从地衣中提取的化学物质,遇酸碱会变色,常用作粗略的酸碱指示剂。也常用来比喻检验事物真伪或性质的标准或试金石。

1 个条目

noun

/ˈlɪt.məs/B2formalscientific
  • zh一种从地衣中提取的化学物质,遇酸碱会变色,常用作粗略的酸碱指示剂。也常用来比喻检验事物真伪或性质的标准或试金石。

A chemical substance derived from lichens that changes color depending on pH, commonly used as a rough acid‑base indicator.

不可数

  1. B2formalscientific

    A coloring material obtained from lichens that turns red in acidic solutions and blue in alkaline solutions, used as a rough acid-base indicator.

    zh石蕊

    • The chemist dipped the litmus paper into the solution to test its pH.
    • Litmus is commonly used in school laboratories for simple acid-base tests.
    • Blue litmus turns red when exposed to an acidic substance.
词形
  • litmuses plural form
  • litmuses' possessive plural form
  • litmus's possessive singular form