alternatn.交替函数
alterv.改变;更改;阉割;切除卵巢
alternating current invasion交流侵入
alternating-current switch交流开关
alternating-current dynamo交流电机
alternating axes of symmetry更迭对称轴
alternating load deformation交变负载变形
alternating fluid hydraulics交流液压技术
alternating system dosimeter交流剂量计