un. 铯离子火箭发动机

VOA标准英语2010年-Israel Successfully Tests Rocket Defen

Iron Dome defense system uses cameras and radar to track incoming rockets and can shoot them down within seconds of their launch. The system was developed by Rafael, the Israel Military Industries, at a cost of $200 million. Robert Berger | Jerusalem

发表于:2019-01-09 / 阅读(53) / 评论(0)

VOA标准英语2010年(一月)

VOA标准英语2010年-Israel to Deploy Hi-Tech Anti-Rocket S

This picture provided by the Israeli Defense Ministry on 6 Jan 2010 and made within 48 hours of release, shows a rocket fired from the Iron Dome system during a test in southern Israel Israel's new anti-rocket system, called the Iron Dome, has passed

发表于:2019-01-13 / 阅读(25) / 评论(0)

VOA标准英语2010年(七)月

英文原版对话1000个:1056 More Moon Hoax

Todd: Jonathan we are talking about conspiracy theories. What about the one where the sound? That when the rocket lands, they have actually audio of the rocket landing and you can't hear the rocket engine, and the rocket engine should be making a rea

发表于:2019-01-20 / 阅读(37) / 评论(0)

原版英语对话1000个

经济学人39:怎样建造时速1000英里的汽车

The land-speed record 地面速度记录 How to build a 1,000mph car 怎样建造时速1000英里的汽车 Hybrid rocketry will be used to drive faster than ever before 混合火箭技术将用于更快地驱动车辆 May 5th 2011 | from the print ed

发表于:2019-01-26 / 阅读(47) / 评论(0)

经济学人综合

物理学家、火箭专家戈达德•罗伯特

18 物理学家、火箭专家戈达德罗伯特 DATE=3-21-01 TITLE=EXPLORATIONS #1944 - Robert Goddard BYLINE=Staff VOICE ONE: This is Steve Ember. VOICE TWO: And this is Shirley Griffith with the VO

发表于:2019-01-30 / 阅读(30) / 评论(0)

文化聚焦

Ariane 5 launch aborted due to technical hitch

BEIJING, Apirl 1 (Xinhuanet) -- An Ariane rocket launch of two communications satellites was aborted Wednesday after a technical hitch at the scheduled moment of liftoff in French Guiana on Wednesday. According to Arianespace, the Ariane 5 rocket's V

发表于:2019-02-06 / 阅读(88) / 评论(0)

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