加拿大外贸
Please note: We like to use Youngtown Sweep movement for this clock design.请问 Youngtown Sweep movement 什么意思
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不知道呀
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A quartz clock is a clock that uses an electronic oscillator that is made of a quartz crystal to keep precise time. This crystal oscillator creates a signal with very precise frequency. Generally, some form of digital logic counts the cycles of this signal and provides a numeric time display, usually in units of hours, minutes, and seconds.
请参考：http://www.makeaclock.com/about_young_town.html
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采用石英运动吗还是？
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用电子震颤器的石英表
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电子表本来都是用石英晶振频率来计时的！！
加拿大电商刚从事这行半年，对电子行业不了解，自己整理了些，算是学习，供大家分享，也请大家补充。我毕竟是个文科生，对这方面知识严重欠缺。 DVD:英文全名是Digital Video Disk, 即数字视频光 加拿大电商昨天我把提单复件发给了客户，今天收到了他回信，如下： Dear Nicholas, please send all shipping documents. We will check B/L copy and we will reply ASAP. Thank you Best Regards .........................................
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