近几年来,国内应用流速容量环测定下呼吸道疾病已有数篇报道,但尚未见此法用于上呼吸道疾病的报道。为此,我们进行如下研究。 In recent years, there have been several reports on the measurement of lower respiratory diseases using the current capacity and volumetric ring in China. However, this method has not been reported for upper respiratory diseases. To this end, we conduct the following research.