单词：cycloidal-pin wheel planetary gearing mechanism
单词：cycloidal-pin wheel planetary gearing mechanism 相关文章
SCIENCE IN THE NEWS - Gore's Movie Heats Up Discussion of Global Warming (and Has His Critics Steaming)By Caty Weaver and George Grow Broadcast: Mon, 3 Jul 2006 16:00:00 UTC (MUSIC) VOICE ONE: This is
2006年慢速英语（七）月
This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Astronomers have already discovered hundreds of exoplanets. But make way for the new kid, which is orbiting a kind of star that models say it shouldnt. Researche
Scientific American(十一)月
Like a phoenix rising from the ashes, astronomers have found a whole new solar system may be forming in the wake of a star's violent death. This is the Hidden Universe of the Spitzer Space Telescope, exploring the mysteries of infrared astronomy wit
国家地理2008年
This is Whats Trending Today. Last week, the American space agency NASA announced it was looking for a Planetary Protection Officer. Many people discussed the job on social media. The Washington Post called the jobs title one of the greatest ever con
2017年VOA慢速英语(八)月
By David McAlary U.S. astronomers have made a finding they say increases the chance that distant stars may harbor planetary systems like our own. They have discovered two planets the size of Neptune e
VOA2004（下）--健康科技
PISCES February I9 to March 20 The Piscean is the ideal silent partner. When actively engaged in a partnership, he is apt to be too indecisive, and either too suspicious or too trusting. His emotions invade everything and they are not clear-sighted.
趣味英语
The wheel on the bus 在公共汽车上 The wheels on the bus go round and round round and round, round and round The wheels on the bus go round and round All through the town The people on the bus go up and down Up and down, up and down The people o
优美儿童英语歌曲
By Anjana Pasricha New Delhi 15 November 2006 India and Pakistan, during two days of peace talks in the Indian capital, have agreed on measures to combat terrorism and reduce the risk of nuclear accidents. The talks have revived a peace process that
2006年VOA标准英语（十一月)
1. The UN Security Council could vote Saturday on sanctions against North Korea in response to the country's reported testing of a nuclear weapon. The US and Japan want a quick vote on the measure, bu
美联社新闻一分钟2006
1. A Florida judge is ordering another DNA sample to be taken from Anna Nicole Smith's body. It comes as the former Playboy playmate's longtime companion Howard K. Stern and her estranged mother fight over Smith's remains. Stern is also fighting Lar
美联社新闻一分钟2007
My infant daughter began crying as I drove home from the store, and since she was harnessed to her safety seat in the back, I couldn't console her. Stopping for a red light, I turned around and waved my hands, calling her name to distract her. I gave
趣味英语
spinning one's wheel re-inventing the wheel 在今天的节目里我们再来给大家讲解两个由轮子,也就是wheel这个字组成的习惯用语。我们已经学过：at the wheel，就是开车
美国习惯用语
Like a phoenix rising from the ashes, astronomers have found a whole new solar system may be forming in the wake of a star's violent death. This is the Hidden Universe of the Spitzer Space Telescope, exploring the mysteries of infrared astronomy with
自然百科2008年
Still, statistically the probability that there are other thinking beings out there is good. Nobody knows how many stars there are in the Milky Wayestimates range from 100 billion or so to perhaps 400 billionand the Milky Way is just one of 140 billi
万物简史
By Vidushi Sinha Washington, DC 10 February 2006 watch Spinning Wheel report Spinning wheel The old-fashioned spinning wheel is making a comeback, not just to make yarn -- but to relieve stress. The h
2006年VOA标准英语（二月）
First Solar Sail to be Launched into Orbit from Russian Submarine 俄潜艇首发太阳反射器进入轨道 A solar sail might do for space missions what fabric sails once did for sea travel.It would
VOA2005（下）--环境科学探索
Shanghai is gearing up for F1 Grand Prix 2017 which will begin on Sunday afternoon at 2pm local time. Practice rounds were conducted Friday and Saturday, with various teams conducting maintenance including tyre maintenance after the third practice ro
2017CRI中国国际广播电台
BEIJING, Feb.24 (Xinhuanet) -- The 84th annual academy awards are set to be handed out at the Kodak theatre in Los Angeles on Sunday night. Nine movies are up for best film but silent movie The Artist has cemented itself as firm favorite after cleani
英语新闻
Scientists Say New Diet May Save Planet From VOA Learning English, this is the Health and Lifestyle report. 欢迎收听美国之音学习英语栏目，这里是健康与生活频道。 Scientists in London say they have found the best diet for both
2019年VOA慢速英语(二)月