forced expiratory flow during middle half of FVC

例句：

1. 1. During the middle half of FVC, the patient's forced expiratory flow is significantly reduced.
   在FVC的中间一半期间，患者的强制呼气流量显著减少。
2. 2. The patient's FVC and FEV were both below the normal range, indicating a significant reduction in forced expiratory flow.
   患者的FVC和FEV都低于正常范围，表明强制呼气流量显著减少。
3. 3.The patient's forced expiratory flow was measured at 60% of the predicted value, which is considered to be below the lower limit for FVC.
   患者的强制呼气流量测量值为预测值的60%，这被认为是FVC下限以下。