variable test[经] 变量测试variableadj.可变的；易变的n.变量；易变的东西variable parameter value可变参数variable be partly fixed局部常化variable weight analysis变动赋权分析variable-length buffer变长缓冲区variable frequency motor变频电机variable range reflector变焦反射器variable area given rule面积变化规律Variable diameter cutter变直径刀具variable speedch control可变语言控制variable focus condenser变焦聚光镜