variable mu[电] 可变放大因数variableadj.可变的；易变的n.变量；易变的东西variable weather易变天气variable carrier变幅载波,可控载波variable venturi可变文氏管variable-angle可变角度variable cluster变量聚类variable coupler可变耦合器variable editing变格剪辑variable shutter可变快门,可变光闸variable - gap电容variable planter变量播种机