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What Makes a Wristwatch Tick?
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Over 100 precision components help this wristwatch keep time. MACHINES: HOW THEY WORK Thursdays 10/9c on Science http://www.sciencechannel.com/tv-shows/machines-how-they-work/ Subscribe to Science Channel: http://bit.ly/SubscribeScience Check out SCI2 for infinitely awesome science videos. Every day. http://bit.ly/SCI2YT Download the TestTube app: http://testu.be/1ndmmMq
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2,786 观看 · 05/04/24
1,162 观看 · 05/01/24
4,926 观看 · 05/01/24
4,677 观看 · 04/17/24
2,632 观看 · 04/17/24
4,638 观看 · 04/13/24
