alternatev.交替；轮流adj.间隔的；轮流的；交替的n.代替者；供替代的选择alternate index辅助索引alternate track更替磁道,交替磁道,替换磁道,备份磁道alternate order二者择一的订单alternate judge代理法官alternate press交替推alternate magnet交置磁铁alternate volume更替卷宗alternate routie[电] 轮替常式alternate method交错法alternate motion往复运动,交变运动