HD Slow motion video of a high precision fiber laser cutting machine engraving square stainless steel tube with intense sparks this 股票视频 Slow motion video of a high precision fiber laser cutting machine engraving square stainless steel tube with intense sparks this 股票视频
4K Welding bright arc onto rectangular steel tube with flying sparks gloved hand guiding torch over metal joint on low angle view 影视素材 Welding bright arc onto rectangular steel tube with flying sparks gloved hand guiding torch over metal joint on low angle view 影视素材
