Worker labor welding steel bolt nuts to metal pole for building and reinforcement structure.

Worker labor welding steel bolt nuts to metal pole for building and reinforcement structure.
  • 素材ID:908584399
    举报
  • 格式:MOV
  • 时长:00:27
  • 作者:bonnontawat
  • 最大分辨率:3840 x 2160px
关键词
工作体系结构职业电动金属色专业焊接接地工业工程钻头螺钉明亮脚踏焊缝螺栓火花闪光灯构建海沟行业设备管道结构焊工技术设计房子详图施工技能手册金属火灾主页色谱柱螺母工具电极