Using liquid hydrogen and oxygen in rockets will provide major advantages for landing astronauts on the moon.
以液氢和液氧为燃料的火箭将为宇航员登陆月球提供尤其重要的有利条件。
And this is why, in rockets and space capsules, weightless astronauts and objects float about in the air.
这就是为什么在火箭和宇宙飞船里，失重的宇航员和物体会在空中漂浮。
They are in a condition of weightlessness. And this is why, in rockets and space capsules, weightless astronauts and objects float about in the air.
这就是为什么在火箭和宇宙飞船里，失重的宇航员和物体会在空中漂浮。
Anyway, who would want to fire streams of rockets in a populated area?
不管怎样，谁会想在人口稠密的地区发射火箭呢？
Some futurists envision nanotechnology also being used to explore the deep sea in small submarine, or even to launch finger-sized rockets packed with micro miniature instruments.
一些未来学家设想纳米技术也可以用于在小型潜水艇里探索深海，甚至可以用来发射装有微型仪器的手指大小的火箭。
Two rockets homed in on it from behind without a sound.
两枚火箭无声地从后面向目标射去。
Pyramids, cathedrals, and rockets exist not because of geometry or thermodynamics, but because they were first a picture in the minds of those who built them.
金字塔、大教堂和火箭的存在并不是因为几何形状或热力学，而是因为它们首先是建造它们的人的脑海中的图画。
In the early 1960s, researchers tried firing rockets trailing wires into thunderclouds to set up an easy discharge path for the huge electric charges that these clouds generate.
在20世纪60年代早期，研究人员试图将火箭尾部的电线发射到雷云中，以便于为这些雷云产生的巨大电荷建立一个简单的放电路径。
Later in the century scientists and technicians started to look at the practical purposes for which fireworks might be employed, such as using rockets to help sailors establish their position at sea.
在该世纪后期，科学家和技术人员开始研究烟花的实际用途，比如利用烟花帮助水手确定他们在海上的位置。
In 1956, he set up the first research institute of rockets and missiles.
1956年，他建立了第一个火箭和导弹研究所。
With all of the new faces, this time may be as important to the Rockets as any other team in the NBA.
有了所有的这些新面孔，这个时候无论对火箭队还是NBA 其他球队都是一样的重要。
In space, however, these rockets are inefficient-they burn through huge quantities of fuel while generating more thrust than necessary.
但是，在太空这些火箭的效率很低——它们通过燃烧大量的燃料，产生了比需要更多的推力。
In response, Bolden referred to the possibility of setting up fuel depots in orbit, which could enable smaller rockets to make trips beyond low-Earth orbit.
在答复中，博尔登提及在轨道中建立燃料补给站的可能，这样小型火箭就可以实现低地球轨道的运行。
The article summed up the new achievements made in electronic computers ,artificial satellites and rockets .
本文总结了电子计算机、人造卫星和火箭这三方面的新成就。（增加概括词）
Air launches are also a greener way of getting into space, because they avoid igniting rockets in the lower atmosphere.
从环保角度来讲，空基发射也有其优越性：不需要在近地面大气层中点燃火箭。
In fact the chart deals with the launches of satellite-carrying rockets.
实际上图表涉及星载火箭的发射。
The Rockets said they saw him improve throughout the week in Austin.
火箭队也提到，通过在奥斯丁训练营一周的训练，姚明又有了进步。
The shuttles can carry a far greater load into orbit than any other rockets now in use, and can also bring heavy items back to the ground.
航天飞机能把远高于现在使用的火箭的载荷送上轨道，并且可以把重物件运返地面。
The launch vehicle technology indicators, including the carrying capacity, precision orbit, rockets of different weights in the spacecraft's reliability and adaptability.
运载火箭的技术指标，包括运载能力、入轨精度、火箭对不同重量的航天器的适应能力和可靠性。
Physicist Robert Goddard, rocketry pioneer, stands next to one of his experimental A-series rockets in front of his workshop in Roswell, New Mexico, in the 1930s.
物理学家罗伯特·戈达德是火箭先驱。1930年代，在新墨西哥罗斯威尔他的车间前，他站在他的实验性A系列一个火箭旁。
S.Army.It detects, classifies, tracks, and locates enemy indirect fire such as mortars, artillery, and rockets in either 360 - or 90-degree modes.
它可以在360度或90度模式下检测、识别、跟踪和定位敌方间接火力，如迫击炮、大炮、火箭等。
In such a situation, the rockets would have waited for a short period - 30 minutes or so - to give the crews a chance to cancel an illicit command.
在此情况下，火箭可能等一小段时间- - -30分钟左右- - -给控制人员一个机会取消不当命令。
The crew would ride up in one of the upcoming Ares I rockets before starting the voyage to Mars.
宇航员在开始前往火星以前，将搭乘一枚“战神1”号火箭升入空中。
According to Futron, a consultancy, in 2010 China launched more rockets than America, for the first time ever.
根据富创(Futron)，一家咨询公司，2010年中国发射的火箭第一次多于美国。
About 40 percent of all new rockets end in failure, NASA has said, and Ares I-X is not exempt from those chances.
美国航空航天局说，所有新火箭约百分之四十是以失败告终，战神i - X火箭不能排除在这种可能性之外。
About 40 percent of all new rockets end in failure, NASA has said, and Ares I-X is not exempt from those chances.
美国航空航天局说，所有新火箭约百分之四十是以失败告终，战神i - X火箭不能排除在这种可能性之外。
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