Hypersonic wind tunnels operating at very low densities were developed starting in about 1960.低密度超音速风洞大约开始发展于1960年.It would reach hypersonic speeds -- five times the speed of sound.也就是说,要使飞机达到特超音速—即音速的五倍.FEM FCT is used ...
The forebody design a key issue for hypersonic airbreathing vehicle.前体设计是吸气式高超声速飞行器设计的关键之一.It would reach hypersonic speeds -- five times the speed of sound.也就是说,要使飞机达到特超音速—即音速的五倍.hypersonic aerodynamics高超音速空气动力学rarefied...
One of the uncertainties of military duty is that you never know when you might suddenly get posted away.任军职不稳定的因素之一是你永远不知道什么时候会突然被派往它处.Uncertainties affecting peace and development are on the rise.影响和平与发展的不确定因素在增加.The S...
打磨木头的表面，为刷清漆做准备。Rub the surface of the wood in preparation for the varnish.这块木头的4个角刨过后就变小了。The piece was reduced in size by planing down the four corners.他无法确定地板是木头的还是石头的。He could not tell whether the floor was wood or s...
蓝色和灰色的柔和色调营造出明快、亮丽的视觉感观。Soft tones of blue and grey create a clean, bright look.要使电脑动画的视觉效果达到要求的逼真程度，花费会十分昂贵。At the required level of visual verisimilitude, computer animation is costly.他们标出了我们视觉经验领域的界限。They marked out t...
The disadvantage is that it is not universally available...缺点在于它并不是随处都可获得。One of the fundamental bars to communication is the lack of a universally spoken, common language...交流的一个基本障碍就是缺少一种大家都说的通用语。The standardized fitti...
Good night, Davey. Sleep tight.晚安，戴维。睡个好觉。He made to chase Davey, who ran back laughing.他假装要去追赶一边往回跑一边大笑的戴维。Laura Bo Carmichael and Davey Birdsong were on different intellectual planes.劳拉·波·卡米开尔和戴维·伯德桑的智力水年完全不同.Nobody di...
Bacchus, like so many grapes planted for still wines in England, is an early - maturing German variety.Bacchus和英格兰这么多为无泡葡萄酒种植的葡萄一样, 是早熟的德国品种.Norwegian lesbians that feed me grapes and know how to sing.还得聘会唱歌的挪威籍女同来喂我葡萄吃....