alterantadj.改变的alterv.改变；更改；阉割；切除卵巢alternating current parameters交流电量alternating-current charging交流充电alternating current arc welder交羚弧焊机alternating priority discipline交换优先控制项目alternating iterative algorithm交替迭代算法alternating-direction methods交替方向法alterable temperature-control变温控制alternating current servo motor交流伺服电机alternating current measurement交菱量alternating voltage compensator交流电压补偿器