老舊化油機車機械部件一定要設計的這麼複雜嗎?
https://www.youtube.com/watch?v=yO_9VHitYyw[YOUTUBE]yO_9VHitYyw[/YOUTUBE]

最近也挺喜歡看這種的
https://www.youtube.com/watch?v=KgCytZqQ-B8
[YOUTUBE]KgCytZqQ-B8[/YOUTUBE]