单词：cathode-pulsed triode oscillator
阴极脉冲调制三极管振荡器
单词：cathode-pulsed triode oscillator 相关文章
841 、 埋头铆钉 countersinkheadrivet 842 、 埋头锥孔 countersink 843 、 埋头螺栓 countersinkheadbolt 844 、 埋头螺丝 countersinkheadscrew 845 、 埋头钻 countersinkdrill 846 、
发表于:2018-11-29 / 阅读(139) / 评论(0)
英文名句短语
英文名句短语
Keeping Time With Quartz Most people know that wrist watches commonly contain quartz. In fact, if you wear a watch, chances are its a quartz watch, since most watches is made today use quartz. But, you may not know what quartz has to do with keeping
发表于:2018-12-31 / 阅读(61) / 评论(0)
英语听力文摘 English Digest
英语听力文摘 English Digest
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a
发表于:2019-01-08 / 阅读(82) / 评论(0)
Scientific American(四)月
Scientific American(四)月