[热点讨论]求助：焊缝口开挖方式 [复制链接]

cdddd:挡土墙外侧擅自挖坑倒塌亡人案例 H_ a##z  
http://www.safehoo.com/Case/Case/Collapse/201506/398805.shtml (2021-01-12 22:33)  D<hX%VJ%M  

cdddd:环缝自动焊机 l]~9BPsR  
https://baike.baidu.com/item/%E7%8E%AF%E7%BC%9D%E8%87%AA%E5%8A%A8%E7%84%8A%E6%9C%BA/5856949?fr=aladdin -T;^T1  
http://51sole1767073.51sole.com/ R!%HQA1U  
http://www.drjc17.com/ k q]E@tE*3  
http://www.drjc17.com/Products-34920646.html `mW~{)x  
....... (2021-01-13 07:52)  ~N
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cdddd:环缝自动焊机 T%&vq6  
https://baike.baidu.com/item/%E7%8E%AF%E7%BC%9D%E8%87%AA%E5%8A%A8%E7%84%8A%E6%9C%BA/5856949?fr=aladdin 'h0>]A 2|X  
http://51sole1767073.51sole.com/ w' J`$=  
http://www.drjc17.com/ _0gdt4  
http://www.drjc17.com/Products-34920646.html d>mZY66P  
....... (2021-01-13 07:52)  fap]`P~#L  

cdddd:靠近楼房挖坑的安全距离安全知识 Ad-5Znc5  
https://www.bbaqw.com/anquan/531529/ (2021-01-13 07:53)  >0ZG&W9