After a thorough investigation, many experts now believe that the streak was a run-of-the-mill jet aircraft contrail.
经过彻底的调查，许多专家现在认为，这条轨迹是一条普通的喷气式飞机尾迹。
Today people and goods travel by jet aircraft and fast ships, and information is transmitted at the speed of light over the Internet.
人和货物通过喷气式飞机和快船来流动，而信息是通过互联网以光的速度传送。
Jet aircraft now can fly the Atlantic in a few hours.
喷气式飞机如今数钟头就可飞越大西洋。
That's why jet aircraft fly in the lower stratosphere !
这就是为什么飞机要在低平流层飞行的原因。
Since the advent of jet aircraft, travel has been sped up.
自从喷气式飞机出现后，旅行的速度加快了。
Turbulence isn't dangerous to a jet aircraft but it is to the people in it.
对于飞机来说气流颠簸并不危险，但是对于飞机里的乘客来说可不是这样。
Turbulence isn't dangerous to a jet aircraft, but it is to the people in it.
对于飞机来说气流并不危险，但是对于飞机里的乘客来说可不是这样。
I don't like the noise of these jet aircraft, but I've learnt to live with it.
我厌恶这些喷气式飞机的噪音，但我已经学会去忍受它了。
Rules of the game: jet aircraft in the air while running shot while winning bubble.
游戏规则：喷气飞机在空中一边喷着白雾，一边夺取泡泡。
This chain eventually led to jet aircraft, nuclear power, and giant radio telescopes .
这一链条后来导致了喷气式飞机，原子能和巨型射电望远镜的发明。
The X-47B will be the first unmanned jet aircraft to take off and land aboard an aircraft carrier.
X-47B将是第一架在航空母舰上起飞并降落的无人机。
If you think what it must be like to share the deck of a ship with several squadrons of jet aircraft.
如果你能想像出和几个中队的喷气机同在一个甲板上是什么滋味儿的话。
And every year jet aircraft generate almost as much carbon dioxide as the entire African continent produces.
每年喷气式飞机产生的二氧化碳的量相当于整个非洲大陆产生的量。
Therefore, the RCS of forward and rear aspects may be modify by using a waveguide model for the calculation of RCS of jet aircraft.
这样，对于复杂的喷气式飞机目标，其机头和机尾的RCS值就可通过波导模型的模拟来修正。
The market for launching small satellites is presently only partly served by the Pegasus rocket, which is launched at high altitude by a commercial jet aircraft.
在小型卫星的发射这一市场，目前只有天马火箭公司提供一些服务。他们用商务喷气式飞机在高空进行发射。
Tsunamis travel as fast as jet aircraft in deep water, where they are spread over a far deeper water column and make for smaller and very gradual waves at the surface.
在深海水域，海啸的传播速度像喷气式飞机一样快，但在海面看到的波浪不大。
The 12-Month Moving Total Trends for both pre-owned business jet aircraft retail sale transactions and average asking price from January 2004 to September 2011 are illustrated in Chart A.
在图A中，展示了自2004年1月至2011年9月，以12个月为单位的二手喷气公务机零售成交量和平均询价信息。
The main shaft between the air compressor and the gas turbine in a jet aircraft engine is hollow to permit an internal speed reduction shaft with the minimum requirement of space and weight.
在喷气式飞机发动机内位于空气压缩和燃气涡轮之间的主轴是空心的，允许有一个需要最小空间和重量的内部减速轴。
The aircraft is powered by a jet engine.
这架飞机由喷气发动机驱动。
The aircraft cost 25 million pounds and can carry heavier loads than huge jet planes while also producing less noise and emitting less pollution.
这架飞机造价2500万英镑，可以比大型喷气式飞机承载更重的载荷，同时产生更少的噪音，排放更少的污染。
One example of such a striking shift was the changeover to jet engines in commercial aircraft.
一个这样鲜明变化的例子是在商业飞机上的喷气式发动机的转变。
So can other aircraft, such as helicopters or prop-planes that don't have jet engines, fly through these conditions?
那么其他的一些飞行器，比如说直升飞机，螺旋桨飞机，他们没有喷气式引擎，可以在这种条件下飞行吗？
The new trainers will prepare fast jet aircrew for flying front-line aircraft with a modern cockpit environment of digital displays sophisticated navigation and advanced avionics.
新的教练机将为前线飞行飞机配备快速喷气飞机空勤人员，以及数字显示的精密导航和先进航空电子设备的现代驾驶舱环境。
The new trainers will prepare fast jet aircrew for flying front-line aircraft with a modern cockpit environment of digital displays sophisticated navigation and advanced avionics.
新的教练机将为前线飞行飞机配备快速喷气飞机空勤人员，以及数字显示的精密导航和先进航空电子设备的现代驾驶舱环境。
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