0:00/0:14
倍速
  • x2
  • x1
  • x0.5
举报

The air conditioning and ventilation system of a large industrial facility is located on the roof. It includes an air conditioner smoke exhaust and ventilation.

视  频 ID：  1104744271
版      权：  Ievgenii Gorun
视频长度：  0:14
横纵比率：  16:9
所属分类：  建筑 工业 
商业用途
如何选择
授权授权书发票合同问题