单词:audio frequency power meter
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AMERICAN MOSAIC - Is the Segway the Answer to City Traffic and Pollution?By Dana Demange and Nancy Steinbach Broadcast: Friday, August 11, 2006 HOST: Welcome to AMERICAN MOSAIC, in VOA Special English
Honey, could you help me operate the VCD player? It can't play. Oh, are the connections correct? I think so. Let me see. Look! You confused the video frequency with the audio frequency. I'm too careless. Can it work now? No. So what's the problem? Ma
He just got the deal done and that was an incredible achievement. 他们就这么成交了 这是一项惊人的成就 That in pure business terms is deal-making, 用纯商业术语来说 这是真正的交易 which is a recognisable feature of your
Narrator: Exercise 3.9. Lecture 3: Electric cars? Solar-powered buses? When most people imagine solutions to the problems of city air pollution they probably think of electricity and solar power. But the problem with an electric car is that the elect
Bladeless Wind-Power Generator is Friendly to Birds 新型风力发电机避免误伤鸟类 Wind turbines are efficient sources of cheap energy but also a source of concern as their huge spinning blades frequently kill birds and bats. A new type of w
Voice 1 Hello. Im Rachel Hobson. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Welcome to our li