... 辙叉咽喉 throat of frog 辙叉有害空间 gap in the frog 辙叉趾长 toe length of frog ...
基于32个网页-相关网页
... 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 转辙角 switch angle ...
基于32个网页-相关网页
... 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 转辙角 switch angle ...
基于1个网页-相关网页
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