单词:orbital steering
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[00:04.88]Then your teacher shouts:Go ! [00:08.12]You let go of the wing support and fall away from the plane. [00:13.40]You throw your head back, arms out, legs apart, as you learned. [00:19.51]You fall face forward toward the Earth below. [00:23.35
Dialogue 4 BUYING A SECOND-HAND CAR Laurance- What kind of a car do you have? Soony--- An old one. Laurance- I know it's old, but what make is it? Soony-- - It's a Chevrolet. Why do you ask? You going
Dialogue 4 BUYING A SECOND-HAND CAR Laurance- What kind of a car do you have? Soony--- An old one. Laurance- I know it's old, but what make is it? Soony-- - It's a Chevrolet. Why do you ask? You going
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
Dialogue 4 Laurance- What kind of a car do you have? Soony--- An old one. Laurance- I know it's old, but what make is it? Soony-- - It's a Chevrolet. Why do you ask? You going into the car business? L
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
After two weeks of scandal, Democratic Congressman Anthony Weiner of New York is leaving office. NPR's Margot Adler reports that Weiner officially resigned this afternoon at the same location where he first asked citizens for their votes some 20 year
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
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
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
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
AS IT IS 2015-10-07 Driver Lets Go of Wheel in New Truck 自动驾驶卡车现世 The first self-driving semi-trailer truck began its first trip on a major European highway last week. The German automobile company Daimler made the vehicle, which is n
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
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
Parliament voted today to increase the driving age from 15 to 16 from August 1st. The vote was unanimous which means all MPs voted for it. The new law also makes it illegal for drivers under 20 to have any alcohol in their blood. Also, anyone who has
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
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
Dai: So, you mentioned coasteering. What is that? Sharron: Right. What it is... it's organized by some groups of people. It can be quite dangerous, but it's very well-run in that you all go out in wetsuits, and you'll go out for a few hours around th
Fear is a fact of life everyone faces from time to time. In most cases fearis a healthy reaction to a dangerous situation. But sometimes fear can be so extreme, so overwhelming, that it interferes with normal living. That is what happened to me drivi