本文对几种磁平的物理概念及相互关系作一介绍。
The physical conceptions and their relationships of some kind of magnetic recording levels are introduced in this paper.
目的 ：观察中药组 （平哮合剂 ）、氨茶碱组治疗前后患者肺通气功能、临床症状改善及可溶性白细胞介素 2受体 （SIL 2R）的变化。
Objective:To observe the changes of pulmonary ventilation capacity, clinic symptoms and the soluble interleukin 2 receptor(SIL 2R) of Pingxiao mixture treated group and aminophylline treated group.
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