It is known at present that ET is the most powerful bronchoconstrictor so that intensive noise may induce bronchial asthma.
ET是目前已知最强的支气管收缩剂,故强噪声可引发支气管哮喘。
It is known at present that ET is the most powerful bronchoconstrictor so that intensive noise may induce bronchial asthma.
ET是目前已知最强的支气管收缩剂,故强噪声可引发支气管哮喘。
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