英语语法分析

Spirometry was performed on all eligible participants.

所有适宜的参与者都做了肺量测量。

This test may be performed if your symptoms and spirometry test do not clearly show asthma.

如果你的症状和肺功能测试并不能清楚地表明你患有哮喘，那么你就可以进行这项试验。

During this test, you inhale increasing amounts of methacholine aerosol mist before and after spirometry.

在这个试验中，你要先吸入大量的醋甲胆碱气雾剂，然后再进行肺活量测试。