variable PI雯参数PIvariableadj.可变的；易变的n.变量；易变的东西variable-block可变块variable valency可变价Variable control变量控制variable capital可变资本variable contact可变接点Variable Modulus可变模系variable deliver变量传递variable seeding变量播种variable turbine可变安装角的叶片variable loading变载荷