航天飞机外贮箱和火箭推进器就在该中心等待装配。
The external tank and solid rocket boosters are waiting in the VAB .
闪闪发亮的白色战神i - X的核心是一个巨型固体燃料火箭推进器。
The gleaming white Ares I-X, at its core, is a giant solid rocket booster.
Cant well的火箭推进器设计原用于宇宙飞船，现可用来燃烧大量氧化氮。
Cantwell's rocket thruster, which was designed for use in spacecraft, can consume the excess nitrous oxide to produce heat.
一个能制造出5000度高温蒸汽和13800磅推力的火箭推进器，是怎样使喷口边缘结冰的呢？
How can a rocket engine that generates 5,000 degree steam and 13,800 pounds of thrust form icicles at the rim of its nozzle?
调查显示，挑战者号发射当日低温，导致火箭推进器上橡胶O行环密封圈失效，进而引起爆炸性气体泄露。
Theinvestigation showed that low temperatures on the day of the launch caused arubber “O-ring” seal on one of the rocket boosters to fail, which led to a leakof explosive gases.
6秒之后，航天飞机的双固体燃料火箭推进器点火，固定航天器的爆炸螺栓切断，整个航天飞机一飞冲天。
After those six seconds, a shuttle? S twin solid rocket boosters ignite, explosive bolts holding the spacecraft down are severed and the entire stack soars spaceward.
Delta4型重型运载火箭是Delta系列中最庞大的，它配备了三支火箭推进器，而一般型号只有一支。
The Delta IV Heavy is the largest of the Delta series, packing the punch of three rocket boosters instead of the usual one.
除此之外，在五十四年的太空探索历史中，还没有人被卫星掉落的残骸击中或击伤过，就算算上卫星雨和火箭推进器也是如此。
And besides, in the 54-year history of the space age, no one has ever been hit by falling debris, despite a steady rain of satellites and rocket bodies.
在火箭发射过程中，火箭推进器与主体脱落时，夜空“变魔术”般出现两个发光的棍状物体，更让天文爱好者们着迷。
In the rocket during launch, the rocket boosters and the main off, the night sky, "magic" as there are two shiny stick-like objects, leaving fascinated by astronomy enthusiasts.
其实比所扬言的要简单得多。科学家们正在开发一种系统利用在污水容易滋生的细菌产生氧化氮，通过火箭推进器燃烧耗尽。
It's actually simpler than it sounds — the scientists are developing a system that exploits sewage-loving bacteria to produce nitrous oxide, which can be used up by a rocket thruster.
火箭污水处理系统。这个由斯坦福大学研究设计的以氧化氮为动力的火箭推进器，也可用于污水处理工厂以减少温室气体排放。
Rocket sewage This nitrous oxide-powered rocket thruster designed at Stanford can also be used in a sewage treatment plant to reduce greenhouse gas emissions.
沐浴着氙气聚光灯光，白色的飞船，带着一对固体火箭推进器和橙色外挂燃料箱，在称为“爬行者”的巨大拖拉机上缓慢行驶了3.4英里。
Bathed in xenon spotlights, the white spaceship, attached to its twin solid rocket boosters and orange external fuel tank, crept 3.4 miles on the back of an enormous tractor called the Crawler.
火箭污水处理系统。这个由斯坦福大学研究设计的以氧化氮为动力的火箭推进器，也可用于污水处理工厂以减少温室气体排放。斯坦福大学。
Rocket Sewage This nitrous oxide-powered rocket thruster designed at Stanford can also be used in a sewage treatment plant to reduce greenhouse gas emissions. Stanford University.
推进器是由火箭发动机提供的，而不是螺旋桨和方向舵，这使得转向变得困难。
Propulsion is provided by a rocket engine, rather than a propeller and rudder, which makes steering difficult.
迄今为止NASA研究了两种前往那里的备选推进器：核热火箭和化学发动机。
So far NASA is exploring two options for propulsion there? A nuclear thermal rocket and a chemical engine.
任务设计师通过略微移动火箭发动机喷口对飞行轨迹做了一些微调以测量它对推进器的影响。
Mission designers have added little tweaks to the flight profile to move the rocket?
鉴于化学燃料火箭浪费太多的推进剂难以实现飞船速度的静变化，电力推进器仅仅使用一小点推进剂就可以做同样的任务。
Whereas chemical rockets waste too much propellant to reach a net change in spacecraft velocity, electric thrusters can do exactly the same mission using just a small fraction of the propellant.
事实上，战神i - X在历史上第三高的火箭，排在被建造来发射航天员和宇航员到月球的一对巨型推进器之后。
In fact, the Ares I-X is the third tallest rocket in history behind a pair of giant boosters built to launch astronauts and cosmonauts to the moon.
但因为控制人员不能这样做，这50枚火箭会接受发射指令，点燃推进器并从发射井升空。
But since the crews would have been unable to do so, the 50 rockets would have accepted the launch instruction, ignited their boosters and risen out of their silos.
火箭发动机比其他推进器有许多优点。
Rocket motors have many advantages over other forms of propulsion.
但其排气速度却异常惊人，大约为化学燃料火箭的十倍—这使得离子推进器的效率非常高。
The exhaust velocity, though, is enormous—more than ten times that of a chemical rocket—and this makes ion propulsion extremely efficient.
由此产生的推力非常微小，但关键的一点是，对于产生相同的推力而言离子推进器所需的燃料要比传统火箭少。
The push power be produced is very tiny but the key point is that compare to produce same push power ion propulsion needs lesser fuels than traditional rocket.
由此产生的推力非常微小，但关键的一点是，对于产生相同的推力而言离子推进器所需的燃料要比传统火箭少。
The push power be produced is very tiny but the key point is that compare to produce same push power ion propulsion needs lesser fuels than traditional rocket.
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