• To test the theory, the team deposited either nicotine or tobacco smoke on sheets of paper, and exposed them to nitrous acid.

    验证这一理论,他们将尼古丁烟草烟雾吸附纸上,让它们亚硝酸反应。

    youdao

  • To test the theory, the team deposited either nicotine or tobacco smoke on sheets of paper, and exposed them to nitrous acid.

    验证这一理论,他们将尼古丁烟草烟雾吸附纸上,让它们亚硝酸反应。

    youdao

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