... grade crossing 平交道口 gradient post 坡度标 graduating stem 均衡节制杆 ...
基于18个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
N a small white post beside a railway line at a point where the gradient changes having arms set at angles representing the gradients (铁路线上的)坡度标桩
应用推荐
模块上移
模块下移
不移动