压缩机术语中英文对照-往复压缩机参数 ... the area of holes in valve seat阀座通道面积——阀座上通流气体之最小面积值 valve opening area阀隙通道面积——阀片完全开启时，由阀片与阀座所构成的隙缝处，气流通道之最小面积 mean gas velocity in valve opening area阀隙流速——气体通过阀隙通道的最大流速 ...
The nose exhalation gastric tube indwelling methodcould wide the openingangle of nasalvalveareaandefficientlyjudge the opening to increase the success rate of the indwelling gastric tube.