... 护轨与心轨的查照间隔 check gage 护背距离 guard rail face gage;back gage 辙叉有害空间 gap in the frog ;open throat; unguarded flange-way ...
基于36个网页-相关网页
... 护轨与心轨的查照间隔 check gage 护背距离 guard rail face gage;back gage 辙叉有害空间 gap in the frog ;open throat; unguarded flange-way ...
基于28个网页-相关网页
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