rocket

• An american, william hale, assembled a vastly improved rocket in 1846 .
  一个叫威廉黑尔的美国人，在1846年组装了一枚经过大大改进的火箭。
• Highly developed control systems could guide these rockets with astounding accurancy .
  高度发展的控制系统能够以极高的精确度制导这些火箭。
• It is reasonable that this result should be generally applicable also to liquid-propellant rockets .
  这个结果通常也应适用于液体推进剂火箭。
• The rocket ship is divided into two parts, the payload part and the fuel-exhaust part .
  把火箭飞行器分为两部分：有效负载部分和燃料排出部分。
• The big satellite missiles make most of the headlines in the story of rocket development .
  这类大型的卫星导弹成了火箭研制史上的大部分头条新闻。
• Unlike a rocket engine, the jet engine, as you know, is an "air breather" .
  正如你们所知道的，这种喷气发动机与火箭发动机不同：它是“空气喷气发动机”。
• Sounding rockets would be useless if they were unable to send information back to the earth .
  高空探测火箭如果不能把资料送回地面，那就没有什么用处了。
• The air molecules making up the earth's atmosphere create friction and tend to slow a rocket .
  组成地球大气层的空气分子会产生摩擦力，并会促使火箭减速。
• The burning surface of the powder then increases, the pressure rises and the rocket may be blown up .
  此时，无烟药燃烧表面增加，压力上升，火箭可能爆炸。
• The rocket climbs upward and onward, with an artificial satellite cradled in its nose cone .
  随带装在其前端锥形体内的一颗人造卫星，火箭一直向上，向前爬升。