电刺激器;电兴奋机

Earth and Sky:Electric Fish 发电鱼

Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod

发表于:2018-12-07 / 阅读(47) / 评论(0)

(科普英语)Earth and Sky

英语语法：122 Rhetorical Questions

Grammar Girl here. Today guest-writer Bonnie Trenga will help us talk about two kinds of peculiar questions. Isnt that going to be fun! Isn't that going to be fun, is a rhetorical question. Were also going to learn about its cousin. Thats called a ta

发表于:2019-01-02 / 阅读(36) / 评论(0)

英语语法 Grammar Girl

AMERICAN MOSAIC - Question About the Electric Guitar / Calif

AMERICAN MOSAIC - October 25, 2002: Question About the Electric Guitar / California Man's Unexpected Boat Trip / 2002 MacArthur Fellows HOST: Welcome to AMERICAN MOSAIC --VOA’s radio magazine in Spe

发表于:2019-01-02 / 阅读(73) / 评论(0)

American Mosaic

Electric Bike Ban in New York Hurts Food Delivery Workers

A ban on electric bicycles in New York City is hurting delivery workers who depend on them to earn a living. Many of the workers are immigrants. Electric bicycles, or e-bikes, have foot-powered pedals like other bicycles. But they also have electric-

发表于:2019-01-03 / 阅读(149) / 评论(0)

2018年VOA慢速英语(二)月

2018年CRI Electric cars unveiled at Beijing Motor Show

Automakers are rolling out their new electric vehicles at the 2018 Beijing Motor Show, the motor industry's biggest sales event this year. Carmakers expect new growth in China's market despite the looming threat of a trade war between China and the U

发表于:2019-01-19 / 阅读(78) / 评论(0)

2018CRI中国国际广播电台

Electric motor made in single molecule

BEIJING, Sept. 6 (Xinhuanet) -- Scientists from Tufts University of the U.S. have created the world's smallest electrical motor in a single molecule. The finding was published in the journal Nature Nanotechnology on Monday. In the research, scientist

发表于:2019-01-30 / 阅读(72) / 评论(0)

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