退行速度的英文

• recessional velocity
• velocity of recession

• "速度"英文翻译    velocity; speed; blast; bat
• "行速度" 英文翻译 :    flight airspeed record
• "步行速度" 英文翻译 :    walking speed; walking velocity
• "带运行速度" 英文翻译 :    tape running speed
• "读行速度" 英文翻译 :    reading line rate
• "飞行速度" 英文翻译 :    airspeed; flight speed; flight velocity; flying eed; flying speed; speed in free air; speed of flight
• "飞行速度计" 英文翻译 :    airspeedometer
• "滚行速度" 英文翻译 :    rotate speed
• "航行速度" 英文翻译 :    route speed
• "记录行速度" 英文翻译 :    recording line rate
• "进行速度" 英文翻译 :    pace
• "可航行速度" 英文翻译 :    navigable speed
• "可行速度" 英文翻译 :    feasible speed
• "旅行速度快" 英文翻译 :    make good time
• "慢行速度" 英文翻译 :    creep speed
• "爬行速度" 英文翻译 :    crawl speed; crawling speed; creeping speed
• "蠕行速度" 英文翻译 :    crawl speed; creeping speed
• "运行速度" 英文翻译 :    operating speed; running rpm; running speed; service speed; speed of operation; speed of service; traveling speed; travelling speed
• "自行速度" 英文翻译 :    self-propelled travelling speed
• "最猩行速度" 英文翻译 :    minimum flying speed
• "程序执行速度" 英文翻译 :    program execution speed
• "磁带运行速度" 英文翻译 :    tape running speed
• "低空飞行速度" 英文翻译 :    low-altitude speed
• "飞行速度范围" 英文翻译 :    flight speed spectrum
• "飞行速度极限" 英文翻译 :    flying speed limit

• From the extent of the red shifts the recession velocities can be computed .
  从红移量可以计算退行速度。
• If the redshift is much less than 1 , we can calculate the receding velocity by the following formula
  若红移z比1少得多则我们便可用以下公式找出星系的退行速度v ：
• Continuing the above example , the galaxy is moving at a speed of about 9000km s away from us , given the speed of light is 3x10
  把数值代入，便可以得出以上例子的星系退行速度为每秒九千公里。
• 513km s mpc , ie , for a celestial object 1 , 000 , 000 parsec away from us , its recession rate is 513km 1 parsec 3 . 26 light years
  513 km s mpc ，即一个距离我们一百万秒差距的天体，它的退行速度是每秒513公里一秒差距3 . 26光年。
• From hubble s law , we know that measurement of recession rate of celestial objects mostly clusters of galaxies and distances are the pre - requisites for the search of h
  ，先要测量出天体主要是星系团的退行速度和距离。哈勃本人在1929年给出第一个数值： h
• American astronomer edwin hubble in 1929 discovered that the recession rate of galaxies was directly proportional to their distance . this is what we call the hubble s law which defines that v h
  美国天文学家哈勃于1929年发现星系退行速度与其距离存在著正比的关系，即所谓哈勃定律：退行速度v h
• We know how fast the galaxies are receding from us . so , if we run the movie of the universe backward , we can calculate how long it takes for the galaxies to get back together . from this , the age of the universe is about 15 billion years 1 . 5 x 10
  利用大爆炸理论亦可以估算宇宙的年，由于我们知道星系的退行速度，只要我们来一个倒镜，计算所有星系回到原点所需的时间，便可得出宇宙的年，结果是大约有150亿年1 . 5x10
• M s . if the motions of the galaxies were random , then we would expect that about half of them will recede from us while half of them will be approaching us . however , hubble found that not only most of them are receding from us , but also the receding velocity is directly proportional to the distance away from us
  假若星系运动的方向是随机的，那么应该有一半的星系正在远离我们，另一半则接近我们，但结果实在出人意表，哈勃发现不单绝大部分星系正在远离我们，而且它们的退行速度和与地球的距离成正比，这个关系可以下式表示：
• There are two major errors . the first one is the error occurred in measuring v . although astronomers can locate v of individual galaxy accurately through the spectrum and the doppler s effect , owing to the gravitational pull exerted from neighbouring galaxies and clusters of galaxies , v is not wholly determined by the expansion of the universe
  有两个主要的误差：第一个是测量退行速度的误差，虽然天文学家利用光谱及多普勒效应，已经很准确地找到个别星系的退行速度，但由于与邻近星系及星系团的引力作用，这个退行速度便不完全是因宇宙膨

• 退行速度的阿拉伯语：سرعة إنحسارية;