variable pole变磁极性
variableadj.可变的;易变的n.变量;易变的东西
variable elevation beam-antenna可变仰角射束天线
variable-area propelling nozzle可变截面推力喷管
variable induction magnetic field可变感应磁场
variable frequency vibration test变频振动试验
variable geometry truss mechanism变几何桁架机构
variable feqency speed regulation变频调速
variable-length instruction set变长指令系统
variable diode function generator可变二极管函数发生器