proportionalit比值, 比例, 相称proportionaladj.成比例的；相称的n.[数]比例项proportionality limit比例极限proportional solenoid比例电磁铁proportionality range比例范围proportional increase[经] 相对增长数(增长百分比)proportional typeface比例字体proportional balancing成比例均衡proportional gas meter比例气体计量器proportional component比例环节proportional bandwidth比例带宽proportional regulator比例调节器