分子间轨道

VOA慢速英语2014 火箭爆炸后美国国家航空航天局面临的问题

Questions for NASA after Rocket Explosion 火箭爆炸后美国国家航空航天局面临的问题 Unmanned Antares rocket is seen exploding seconds after lift off from a commercial launch pad in this still image from NASA video at Wallops Island, V

发表于:2018-12-08 / 阅读(280) / 评论(0)

2014年VOA慢速英语(十)月

VOA标准英语2014--维珍宇宙飞船失事引发诸多问题

Virgin Spaceship Crash Raises Questions 维珍宇宙飞船失事引发诸多问题 WASHINGTON Plans to fly tourists to the edge of space could be delayed after Friday's crash of Virgin Galactic's SpaceShipTwo during a manned test flight. It is the se

发表于:2018-12-16 / 阅读(280) / 评论(0)

VOA标准英语2014年(十一月)

VOA双语新闻：12、美国火箭爆炸，私营航天产业的挫折

美国火箭爆炸，私营航天产业的挫折 Wednesday's successful launch of a Russian space vehicle taking supplies to the International Space Station was in sharp contrast to the explosion of a private U.S. cargo space craft shortly after it's

发表于:2018-12-19 / 阅读(297) / 评论(0)

VOA双语新闻 2014年10月

Earth and Sky:Galactic Rotation 银河系自转

Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel

发表于:2019-01-02 / 阅读(482) / 评论(0)

(科普英语)Earth and Sky

美国私企飞船与空间站对接

美国私企飞船与空间站对接 WASHINGTON, Jan. 12 (Xinhua) -- A commercial spacecraft, operated by U.S. space company Orbital Sciences Corp., docked with the International Space Station (ISS) on Sunday morning on its first official cargo resup

发表于:2019-01-09 / 阅读(312) / 评论(0)

英语新闻

VOA慢速英语2011--Space Junk Threatens Earth’s Orbital E

SCIENCE IN THE NEWS - Space Junk Threatens Earths Orbital Environment JIM TEDDER: This is SCIENCE IN THE NEWS, in VOA Special English. Im Jim Tedder. KATHERINE COLE: And Im Katherine Cole. Today, we tell about an ever increasing number of objects in

发表于:2019-01-12 / 阅读(351) / 评论(0)

2011年VOA慢速英语(九)月

VOA标准英语2012--Global Warming Could Delay Next Ice Age

Global Warming Could Delay Next Ice Age The next ice age could be delayed by tens of thousands of years due to excessive amounts of heat-trapping carbon dioxide in the atmosphere, which disrupts Earths natural cycle of warming and cooling, according

发表于:2019-01-13 / 阅读(324) / 评论(0)

VOA标准英语2012年(一月)

VOA标准英语2014--火箭发射失败美国私人航天受挫

With Failed Launch, US Private Space Industry Suffers Setback 火箭发射失败美国私人航天受挫 Wednesday's successful launch of a Russian space vehicle taking supplies to the International Space Station was in sharp contrast to the explosi

发表于:2019-01-14 / 阅读(282) / 评论(0)

VOA标准英语2014年(十月)

双语：太空垃圾数量已达“临界点”

The amount of debris orbiting the Earth has reached a tipping point for collisions, which would in turn generate more of the debris that threatens astronauts and satellites, according to a US study released on Thursday。 NASA needs a new strategic p

发表于:2019-01-30 / 阅读(341) / 评论(0)

实用英语

2006年VOA标准英语-US Shuttle Astronauts Test Orbital Repair Metho

By David McAlary Washington 12 July 2006 Astronaut Mike Fossum (on arm)installs the International Space Station's railcar-like mobile transporter U.S. space shuttle astronauts are on their third spacewalk since Saturday, this time to practice method

发表于:2019-02-03 / 阅读(413) / 评论(0)

2006年VOA标准英语（七月）

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学英语单词

-acea

6-glucosidase

airy isostatic hypothesis

brunettia (brunettia) rotundior