... 足丝蚁 web spinner 足形套 foot-shaped loop 镞形的 sagitate ...
基于24个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
youdao
应用推荐
模块上移
模块下移
不移动