• 1. MMEF: 最大呼气中期流速 | 最大呼气中段流量(Maximal Mid Expiratory Flow) | 中期流速 | 占预计值百分比
• 2. maximal midexpiratory flow MMEF: 最大呼气中段流量
• 3. MMEF Maximum midexpiratory flow: 最大呼气中期流量

• 1.Result There were significant difference in MMEF, V50 and V25 between smoking group and non-smoking group.
  结果吸烟组反映小气道功能的指标MMEF、V50、V25下降，吸烟组与非吸烟组比较有显著性差异。
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• 2.Results Symptoms and pulmonary function (FEV1, MMEF) of the patients were improved obviously in the treated group. While the observed indexes were not significantly changed in the control group.
  结果治疗组病人的症状及肺功能(FEV_1、MMEF)有明显改善，而对照组各项观察指标均无显著变化。
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