单词：constant-current device
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Could an Electric Current Stop Motion Sickness? 晕车能够提前预防,你相信吗？ Some people can get motion sickness from being in moving vehicles such as cars or airplanes. 有些人在快速移动的交通工具上会晕车，例如乘坐汽车
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Do you like working up a sweat? Or do you feel like maybe sweat should work for you? Well, hold on to your sudoriferous glands. Because researchers have designed a device that could someday produce power from your perspiration. The schvitzy scheme wa
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[00:05.20]Nikola Tesla developed the alternating current power system that provides electricity in the United States. [00:14.42]Many of his other discoveries led to electronic inventions for which other scientists were honored. [00:22.75]Mister Tesla
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Section C Great Ideas Some of the most important inventions of the past 2,000 years may surprise you. Want to get rich? Become famous? You don't have to be a film star or a basketball player or a musi
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at 19XX price 按一九ＸＸ年价格计算 at a discount 按赔价计算；按贴水价格计算；打折扣 at a premium 按溢价计算；按升水价格计算 at call 通知付款；按通知 at
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LONDON, June 16 (Xinhua) -- Drillings and fillings at the dentist's are always dreadful and make tooth decay treatment very unpleasant. But British scientists have developed a new approach of fixing tooth decay, which could get rid of all the drillin
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