... 铺碴 ballasting 轨枕铺设 sleeper laying 铺轨 rail-laying ...
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sleeper-laying machine 铺枕机
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During rail laying, the loop part of the U-shaped bent loop is knocked bent to hold down the foot of the rail and in this way, the sleeper and the rail are connected together.
铺轨时，“U”形弯环的环部被砸弯，压住钢轨的底脚，即可将轨枕与钢轨联结在一起。
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