rail laying machine with cantilever
... 修补木枕 tie repairing 悬臂式铺轨机 rail laying machine with cantilever 悬臂式铺轨排机 track panel laying machine with cantilever ...
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短语
单悬臂式铺轨机
track-laying machine with single cantilever
双悬臂式铺轨机
track-laying machine with double cantilevers
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