Place it near the start of a trade-school edit, after the workshop is introduced and before the finished project is revealed, then follow it with a brief celebratory sound so the welding moment leads into the result rather than closing the video.
關於此聲音
This 15-second clip is built around welding vocational training, the hands-on trade-school work its title names, with the uploader presenting it simply as their own work. It carries a proud, focused workshop feeling, the satisfaction of learning a practical skill and showing what a day on the tools can produce.