PET was monitored with peak flowmeter and the percentages of predicting value was calculated (PEF %).

峰流速仪测定pef，并计算占预计值的百分比(PEF %)。

youdao

PET was monitored with peak flowmeter and the percentages of predicting value was calculated (PEF %).

峰流速仪测定pef，并计算占预计值的百分比(PEF %)。

youdao