FVC level showing a clear downward trend;
肺活量水平呈现明显下降趋势；
The spontaneous activities were correlated with clinical dyspnoea and % FVC.
自发电位与临床呼吸困难与%FVC相关。
The FVC increased markedly in A and B group at the middle and end of treatment.
组治疗中期及治疗后用力肺活量（FVC）显著增加。
First second forced expiratory volume accounts for the percentage of FVC (FEV1%).
第一秒用力呼气量占用力肺活量的百分率(FEV1 %)。
Left atrial fractional area change (FAC) and fractional volume change (FVC) during atrial systole were calculated.
并与左房收缩时左房面积改变分数(FAC)和容积改变分数(FVC)作相关性研究。
There were significant difference in the FEV1(%)and FEV1/FVC(%) rates from mild to very severe COPD and controls(P<0.05).
COPD轻度、中度、重度和极重度与对照组的FEV1（%）和FEV1/FVC（%）差异有统计学意义（P〈0.05）。
Conclusions: FVC and DLCO were the most sensitive indices reflecting impairment of pulmonary function in asbestos workers.
结论：石棉工人肺功能变化的最敏感指标为FVC和DLCO。
Pulmonary function tests(PFT), including forced vital capacity(FVC), forced the first second of expiratory volume (FEV1) and FEV1/FVC.
肺功能检查结果。包括用力肺活量（FVC），第一秒时间肺活量（FEV1）和一秒率（FEV1／FVC）等。
The total amount of air they could blow out after a deep breath was also measured (Forced Vital Capacity, FVC), but there was little effect on this measure.
最大肺活量是指在深吸气之后呼出的最大气量，它与肺功能没有太大关系。
Objective. To compare the rate of respiratory decline using percent normal forced vital capacity (% FVC) measurements before and after posterior spinal fusion.
目的。使用目前常用的用力肺活量(FVC)指标来判断脊柱后路融合手术后呼吸功能的降低情况。
The regression equations of expiratory and inspiratory resistances were built with multiple stepwise regression analysis on the IBM PC/XT computer with age, height and FVC as independent variables.
以年龄、身高、FVC为自变量，在IBM-PC／XT计算机上用多元逐步回归法建立呼气和吸气阻力的回归方程。
The regression equations of expiratory and inspiratory resistances were built with multiple stepwise regression analysis on the IBM PC/XT computer with age, height and FVC as independent variables.
以年龄、身高、FVC为自变量，在IBM-PC／XT计算机上用多元逐步回归法建立呼气和吸气阻力的回归方程。
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