0:00/0:20
倍速
  • x2
  • x1
  • x0.5
举报

The 3d printer is printing a gear from green plastic. A layer by layer appears on the desktop new detail. concept of modern design technology

视  频 ID：  1101508791
版      权：  Sherbak_photo
视频长度：  0:20
横纵比率：  16:9
所属分类：  科学 科技 
商业用途
如何选择
授权授权书发票合同问题