movable frog的意思|示意
movable frog相关短语
1、 switch with a movable frog 活动辙叉道岔
2、 movable-wing frog 可动翼轨辙叉
3、 movable point frog 可动心轨辙叉,可动辙岔
4、 frog movable point 可动辙岔
5、 movable derailing frog 移动脱轨辙叉
6、 Frog with a movable nose 尖端可动叉心
7、 movable-point frog 可动心轨辙叉
8、 movable wing rails movable-wing frog 可动翼轨辙叉
9、 movable-nose frog 可动心轨辙叉