单词:electronic switching tube
单词:electronic switching tube 相关文章
补充: CBR continuous bit rate CCIS common-channel interoffice signaling CCITT CCITT is the International Consultative Committee for Telephone and Telegraph, a consultative committee to the Interna
Yvonne: This is 6 Minute English, I'm Yvonne Archer and Alice has kindly joined me for today's programme. Hello Alice. Alice: Hi Yvonne. Yvonne: Now Alice, how do you get around London? Alice: Ooh by bus, bicycle and usually the Tube. Yvonne: Aha, an
THIS IS AMERICA - Debate Over Electronic Voting By Jill Moss Broadcast: Monday, July 05, 2004 (MUSIC) VOICE ONE: Welcome to THIS IS AMERICA, in VOA Special English. I'm Gwen Outen. VOICE TWO: And I'm
BBC Learning English London Life Friendliness on the tube Yvonne:I'm Yvonne Archer and this is London Life from bbclearningenglish.com. Hello! In today's programme, we're talking about friendliness on London's tubes. Is there any? As you probably kn
物理学 statics 静力学 motion 运动 inertia 惯性 gravitation 引力 relativity 相对 gravity 地心引力 vibration 震动 medium (media) 媒质 frequency 频率 wavelength 波长 pitch 音高 intensity 强度 echo 回声 resonance 回声,洪
With consumers rushing to buy the latest gadgets, the problem of what to do with discarded electronic products is becoming a growing environmental concern. Although electronic recycling is not yet as popular as paper and plastic recycling, two Americ