variable PI雯参数PIvariableadj.可变的；易变的n.变量；易变的东西variable filter可变滤波器variable access变量存取variable column变量列variable torque可变力矩variable-gain变增益variable tariff滑动税variable kernel可变核variable domain变域variable factor可变因子,可变因素variable budget临时预算,暂定预算,可变预算