单词downstroke
n.: 〔技〕活塞下降行程;下行冲程网络: 向下冲程;向下行程;重打
下行冲程
〔技〕活塞下降行程
复数:downstrokes
Phase IV is the inspiratory downstroke. This is the beginning of the inhalation and the carbon dioxide curve falls steeply to zero.
阶段IV是吸气下降支。这是吸入的开始及二氧化碳曲线急速降为零。