Eleven point two kilometers per second, at which satellites can be freed from the gravitation of the earth, is called "escape speed".
卫星以11.2千米每秒的速度前进可以脱离地球引力，这被称为“逃逸速度”。
This spinning motion, at speeds of hundreds of kilometers per second, may cause matter in the disk to take on a spiral shape.
这种以每秒数百公里的速度旋转的运动，可能会使圆盘上的物质呈现出螺旋形状。
The velocity of the Earth in orbit is about 30 kilometers per second.
地球在轨道里的速度，约为30千米每秒。
Light is the fast thing in the world, the speed of which is 300.000 kilometers per second.
世界上光的速度是最快的，其速度是每秒三十万公里。
Electromagnetic waves travel with the speed of light, which is 300,000 kilometers per second.
电磁波，以光速传播，也就是30万公里，每秒。
The velocity measurable range is from several meters per second to 1.4 kilometers per second.
测量精度优于千分之五，测速范围从每秒几米到每秒一千四百米。
Light travels at about 300, 000 kilometers per second (186, 000 miles per second) — that's pretty fast.
光速大约为每秒300,000公里(即每秒186,000英里)——非常之快。
Voyager 1 is moving the fastest though, escaping the solar system at about 17 kilometers per second.
而航行者1号是速度最快的，正以约每秒17千米的速度脱离太阳系。
When reached 182 km, second stage rocket off automatically, reach a speed of 68 kilometers per second.
当达到182公里高度时，第二级火箭自动脱落，速度达到每秒68公里。
The Long March No. 2 Rocket sent up the satellite into space at the speed of 11.2 kilometers per second.
长征二号火箭以每一秒钟11.2千米的速度将卫星发射到太空。
From the observed speeds-up to almost 500 kilometers per second-they could then calculate the hole's mass.
根据所观测到的速度——几乎高达每秒钟500公里，天文学家们可以计算出该黑洞的质量。
So it is this component, v cosine theta - which we call the radial velocity-- that is minus 100 kilometers per second.
这个成分，是vcosθ,我们叫做径向速度-,等于-100，公里每秒。
A mixture of liquid hydrogen and liquid oxygen produces an exhaust with a speed as high as five kilometers per second.
液态氢和液态氧的混合物产生的排气速率高达每秒5公里。
The shuttle takes about 1.5 hours to go around and the speed, that tangential speed, is very close to eight kilometers per second.
飞机需要一个半小时,且其切向速度，非常接近8千米每秒。
If you are near Earth in orbit, you are eight kilometers per second, and eight times the square root of two 2 is exactly that 11.2.
如果你在轨道接近，地球，那是8千米每秒，8乘以2平方根，正好是11。
Known as OB runaways, these massive stars tear through space at surprisingly high speed-sometimes hundreds of kilometers per second.
这些被叫做O B速逃星的巨大的恒星在以极高的速度(有时达上百千米每秒)在太空中穿行。
The speed at point D is 9.0 0 km/s kilometers per second, and I'll Everything else we should be able to calculate now from these numbers.
点D时，速度为0,9。,所有的都可以从,这些数字中算出来。
When an earthquake occurs, it generates an expanding wavefront from the earthquake hypocenter at a speed of several kilometers per second.
当地震发生，它会从震源产生一个速度为数公里每秒的扩散的波。
The most widely accepted value for the Hubble constant right now is 72 kilometers per second per megaparsec, obtained by the Hubble Space Telescope.
目前哈勃常数最被广泛认可的值是每秒每百万秒差距72千米，这个值是由哈勃空间望远镜测出的。
The glowing comet dust grains are traveling at about 60 kilometers per second through the denser atmosphere around 100 kilometers above Earth's surface.
发光的彗星尘埃颗粒正以每秒60公里的密集的气氛中约100公里以上的地球表面。
This spinning motion, at speeds of hundreds of kilometers per second, may cause matter in the disk to take on a distinctive spiral shape like a cosmic pinwheel.
每秒几百公里的旋转速度可能使圆盘里的物质呈现象宇宙玩具风车一样独特的螺旋形。
Electromagnetic emitter can give the projectile a velocity of several kilometers per second and makes the projectile have tremendous kinetic energy and weapon power.
电磁发射器推力能把弹丸加速到每秒几公里的速度，使其具有巨大的动能和极强的毁伤能力。
Hitting at 2 kilometers per second, the impact of the SMART-1 spacecraft was expected to leave a 3-meter-by-10-meter crater and send dust kilometers above the surface.
这架名为“智能1号”的探测飞船的撞月速度为每秒2公里。按照此速度，这次撞击预计会在月球表面留下一个直径3米、深10米的坑，而且会在月面激起几公里高的尘埃。
Another simple calculation shows that at light speed-186,000 miles per second (300,000 kilometers per second) -the beam reaches a target 200 miles away in. 001 second.
另外一简单计算表明，光速为每秒186,000英里(每秒30万公里)，光束到达200英里以外目标需要. 001秒时间。
The comet dust is vaporized as it enters the atmosphere at upwards of 60 kilometers per second, producing visible trails that begin at altitudes of around 100 kilometers.
这颗彗星尘埃以每秒60多公里的速度闯入地球大气层，在大约100公里的高空开始产生肉眼可见的光迹。
The explosion, the supernova explosion throws the outer layers of the star with a huge speed some 10,000 kilometers per second into space, and that is what you are seeing.
这个爆炸，超新星的爆炸,以高速抛出,行星的外层,速度是一千公里每秒，甩到宇宙空间里，这就是你们所看到的。
NASA's Solar Dynamics Observatory said it saw a large coronal mass ejection (CME) associated with the flash blasting toward Earth at about 560 miles per second (900 kilometers per second).
美国国家航空和航天局的太阳力学天文观测台称，有一股强大的与耀斑引起的日冕物质抛射大约以每秒560英里（每秒900千米）的速度向地球袭来。
The spacecraft passed the asteroid at a minimum distance of 3,160 kilometers (1,950 miles) and at a velocity of 15 kilometers (9 miles) per second, completing the flyby in just a minute.
探测器以每秒15公里(9英里)的速度通过小行星时，最近距其只有3160公里(1950英里)，而整个飞越仅耗时不到一分钟。
The spacecraft passed the asteroid at a minimum distance of 3, 160 kilometers (1, 950 miles) and at a velocity of 15 kilometers (9 miles) per second, completing the flyby in just a minute.
探测器以每秒15公里（9英里）的速度通过小行星时，最近距其只有3160公里（1950英里），而整个飞越仅耗时不到一分钟。
The spacecraft passed the asteroid at a minimum distance of 3, 160 kilometers (1, 950 miles) and at a velocity of 15 kilometers (9 miles) per second, completing the flyby in just a minute.
探测器以每秒15公里（9英里）的速度通过小行星时，最近距其只有3160公里（1950英里），而整个飞越仅耗时不到一分钟。
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