• It is known at present that ET is the most powerful bronchoconstrictor so that intensive noise may induce bronchial asthma.

    ET目前已知最强的支气管收缩剂,噪声引发支气管哮喘

    youdao

  • It is known at present that ET is the most powerful bronchoconstrictor so that intensive noise may induce bronchial asthma.

    ET目前已知最强的支气管收缩剂,噪声引发支气管哮喘

    youdao

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