类比基频泸波器

科学美国人60秒 SSS This Cell Phone Needs No Battery

This Cell Phone Needs No Battery 不用电池的新型手机？ A dying battery is a huge annoyance for cell phone users. But for engineers? It's inspiration. Can we design a smartphone which can make a phone call and have a conversation without the

发表于:2018-12-24 / 阅读(32) / 评论(0)

2017年科学美国人(七)月

Indian Scientists Invent Nose Filter to Protect Against Air Pollution

From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a

发表于:2019-01-03 / 阅读(65) / 评论(0)

2018年VOA慢速英语(一)月

电信专业英英词典V

VAD value-added distributor VAN value-added network VAR value-added reseller VBR variable bit rate VCI virtual circuit identifier VCS virtual circuit switch Very Small Aperture Terminal (VSAT) VSATs a

发表于:2019-01-03 / 阅读(40) / 评论(0)

电信英语

电信类英语词汇表大全-26

中文英文缩写搭接业务/代答业务/截接业务（PBX） pick-up service 达林顿放大器 Darlington amplifier 打包带 strap 大功率/高功率的 high power 大规模集成电路 Lar

发表于:2019-01-03 / 阅读(58) / 评论(0)

电信英语

VOA慢速英语2015 志愿者在夏威夷体验火星

Volunteers Get Taste of Mars in Hawaii 志愿者在夏威夷体验火星 For generations, people have dreamed of traveling to Mars to explore Earth's closest planetary neighbor. NASA and other space agencies have announced plans to send people to the

发表于:2019-01-12 / 阅读(26) / 评论(0)

2015年VOA慢速英语(三)月

VOA标准英语2014--Band Builds Fan Base Through Technology, Live Experience

Band Builds Fan Base Through Technology, Live Experience LOS ANGELES Nick Sherwin of California-based Suburban Skies says his band promotes itself and controls its own destiny thanks to 21st Century technology. Social media is a wonderful thing, and

发表于:2019-01-14 / 阅读(180) / 评论(0)

VOA标准英语2014年(六月)

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basic operating weight

blue phlebitis

Boultonia