方法采用负高压呼出气中子体测定装置。
Methods By using the negative high voltage exhaled thoron progeny measurement system.
目的观察哮喘患儿呼出气一氧化氮的变化。
Objective To detect changes in exhaled nitric oxide in children with asthma.
如果你觉得你的胸口剧痛,立即呼出气回到表面。
If you feel intense pain in your chest, exhale and return to the surface immediately.
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