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movable-point frog

tech. 活动辙叉; 可动心轨辙叉
Movable-Point Frog
railw. 可动心轨道岔; 可动心轨道岔/辙叉
Movable Point Frog
commun., railw. 可动心轨
movable point frog
construct. 可动心轨辙叉

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