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电信专业英英词典M-2

Microwave In telecommunications, microwaves are frequencies above 1 GHz. MIPS million instructions per second Modems (MOdulator/DEModulators) Modems are devices that transform digital signals generate

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电信英语

SSS 2009-04-06

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

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Scientific American(四)月

SSS 2011-09-09

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Common batteries are electrochemical cells. And they may get better thanks to living cells: the multicellular organism called brown algae. Lithium ion

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Scientific American(九)月

VOA常速英语2013--非洲大陆的灰尘飘向美国

Africa Kicks-up A Lot of Dust 非洲大陆的灰尘飘向美国 Bits and pieces of the African continent are falling on the United States and surrounding regions much of the year. Scientists say large amounts of African dust may be having major effec

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VOA常速英语2013年(九月)

美国语文第六册第57期:我的演说经历(6)

and should as soon think of counterfeiting another's look or step or voice, or of modulating my own by a pitch pipe 一提到演说，就会想到伪造其他人的表情，步伐或声音，抑或通过为笛子定调的方法来调整我自己的音调

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美国语文第六册

2015年CRI 美国邀请习近平国事访问嫦娥五号调相试验完成

It's been confirmed Chinese President Xi Jinping is going to be making his first state visit to the US as President. Chinese ambassador Cui Tiankai says discussions are already underway about the logistics of the trip. The date for Xi Jinping's trip

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2015CRI中国国际广播电台

经济学人445:世界上首次中微子通信服务

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2-mercapto-4-hydroxy-pyrimidine

Abert's finches

account form profit and loss statement