字表面声波延迟线

科学美国人60秒 SSS Windows Vex Bats' Echolocating Abilities

Windows Vex Bats' Echolocating Abilities 干扰蝙蝠回声定位的烦人窗 Just as humans understand the shape of our surroundings by how light reflects off objects, bats use reflections of sounds they produce insteadwhats called echolocation. But

发表于:2018-12-02 / 阅读(226) / 评论(0)

2017年Scientific American(九)月

SCIENCE IN THE NEWS - Plate Tectonics

SCIENCE IN THE NEWS - Plate Tectonics By Marilyn Christiano Broadcast: Tuesday, February 17, 2004 (THEME) VOICE ONE: This is Science in the News, in VOA Special English. I'm Sarah Long. Graphic Image

发表于:2018-12-07 / 阅读(245) / 评论(0)

科技之光

《神奇树屋》第三十九册 Dark Day In the Deep Sea 07 help

Jack plunched down into thesea, the water was freezing cold, hepumped back up to the surface, choaking and coughing, the lifevest kept Jack closed, but the waves kept hammering at him. Help! Jack shouted. Thought to the twenty foot tiger shark, andmy

发表于:2018-12-10 / 阅读(245) / 评论(0)

汪培珽儿童英文分级书单《神奇树屋》

新视野大学英语读写教程词汇第三册 Unit 6a

New Words 6A @ earthquake n. [C] (also quake) a sudden shaking of the Earth's surface 地震 @ detect vt. notice or discover sth. that is difficult to see, feel, etc. 发现；查出 @ experimental a. used for, relating to, or resulting from experime

发表于:2018-12-17 / 阅读(159) / 评论(0)

新视野大学英语读写教程词汇第三册

商务口语：怎样坚持要求通话

星级典句：第一句：I'm afraid I would like to speak to Mr. Black right now. 我想现在和布莱克先生说话。 A: Could you connect this call with Mr. Black, please? 麻烦你接布莱克先生，好吗？ B: I am sorry, Mr. Smith. Mr.

发表于:2018-12-26 / 阅读(159) / 评论(0)

天天商务口语

电信专业英英词典D-3

Duplex Transmission - This is the capability for simultaneous data transmission between a sending and receiving station. Dual Tone Multi-Frequency (DTMF) - This is when two tones are used to represent

发表于:2019-01-03 / 阅读(182) / 评论(0)

电信英语

电信专业英汉词典d1

digital revolution 数字革命 digit 数字 (码位 )，数位 digital economy 数字经济 digital earth 数字地球 digital subsistene 数字化生存 digital museum 数字博物

发表于:2019-01-03 / 阅读(255) / 评论(0)

电信英语

电信英语及其缩略语解释-20

DSB Direct Satellite Broadcast 直接卫星广播 DSB Double SideBand 双边带 DSBRC Double SideBand Reduced Carrier 双边带减幅载波 DSBSC Double SideBand Suppressed Carrier 双边带抑制载波

发表于:2019-01-03 / 阅读(232) / 评论(0)

电信英语

VOA标准英语2010年-Fish 'Cell Phones' Track Marine Life

A unique array of underwater listening devices stretches 3,000 kilometers along the west coast of North America to track marine life along the continental shelf. It's like giving fish a cell phone, says Pacific Ocean Shelf Tracking (POST) executive d

发表于:2019-01-11 / 阅读(238) / 评论(0)

VOA标准英语2010年(九)月

VOA慢速英语 2007 0619b

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Barbara Klein. VOICE TWO: And I'm Bob Doughty. Scientists who study the Earth tell us that the continents and ocean floors are always moving. Sometimes, this movement is violent and

发表于:2019-01-11 / 阅读(180) / 评论(0)

VOA慢速英语2007年（六）月

VOA标准英语2012--Digital Age Survivors, Japan’s Jazz Cafés Still Attract Fans

Digital Age Survivors, Japans Jazz Cafs Still Attract Fans It was never about the coffee. Long before customers had a choice of a double espresso or soy latte, Japanese flocked to coffee shops serving just a couple of kinds of beans, but an endless v

发表于:2019-01-14 / 阅读(161) / 评论(0)

VOA标准英语2012年(二月)

英文原版对话1000个:1055 Moon Hoax

Todd: So one very popular conspiracy theory is the moon hoax. Jonathan: Yes, that's always a very funny one to hear people talk about. They saw this one program on Fox which had five or six points which look so impressive, you know, when you've got t

发表于:2019-01-20 / 阅读(210) / 评论(0)

原版英语对话1000个

2007年VOA标准英语-Ocean's Music Presented by San Fransisco Audio

By Liu Enming San Francisco, California 04 September 2007 Pipe picks up sounds created by waves At the tip of a tiny peninsula near San Francisco, California's Golden Gate Bridge stands the Wave Organ, a work of art that allows people to listen to mu

发表于:2019-01-20 / 阅读(287) / 评论(0)

2007年VOA标准英语（九月）

VOA慢速英语20060418c

SCIENCE IN THE NEWS - Plate Tectonics: Nature's Way of StretchingBy Nancy Steinbach Broadcast: Tuesday, April 18, 2006 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Barba

发表于:2019-01-30 / 阅读(291) / 评论(0)

2006年慢速英语（四）月

VOA慢速英语2010年-SCIENCE IN THE NEWS - How Earth Is Cra

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Steve Ember. Scientists who study the Earth tell us that the continents and ocean floors are always moving. Sometimes, this movement is violent and mig

发表于:2019-01-31 / 阅读(199) / 评论(0)

2010年慢速英语(一)月

电信类英语词汇表大全-17

中文英文缩写捕获/拦截/收集/采集/获取 acquisition 捕捉 capture 捕捉范围 pull-in range 捕捉器 acquirer 不成功扩展后向建立信息消息 Extended Unsuccessful backward

发表于:2019-02-01 / 阅读(287) / 评论(0)

电信英语

跟单英语辅导之情形例句（2）

告知公司名并自我介绍 1. Franklin Company Personnel Department. 富兰克林公司人事部。 2. Good morning Franklin Company, may I help you? 早晨好，富兰克林公司。我可以为你服务吗？ 3. Personnel Department. This is Ca

发表于:2019-02-08 / 阅读(250) / 评论(0)

实用英语

科学美国人60秒 SSS 蝙蝠回声定位

Just as humans understand the shape of oursurroundings by how light reflects off objects, batsuse reflections of sounds they produce insteadwhat's called echolocation. But despite theirexcellent sensing abilities, one type of obstaclevexes the animal

发表于:2019-02-14 / 阅读(187) / 评论(0)

2018年科学美国人1月

【英语时差8,16】海浪的形成原理

Those waves hitting the sand actually begin far out at sea. And it doesnt take much to get them going. A little wind will do the trick. First the wind blows over the surface of the water, generating the little ripples you can see just by blowing acro

发表于:2019-02-23 / 阅读(166) / 评论(0)

英语时差8，16

CCTV9英语新闻：New strategic industries board to be removed from 13th Five-Year Plan

The launch of a new stock board for strategic emerging industries has been called into question by a report carried on the official Xinhua News Agency web site. The report says the government has decided to remove the board from the 13th Five-Year Pl

发表于:2019-03-12 / 阅读(408) / 评论(0)

cctv9英语新闻2016年

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aegilopses

aluminum heat exchanger