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...
We have had incessant snowfall since yesterday afternoon.从昨天下午开始就持续不断地下雪.She is tired of his incessant demands for affection.她厌倦了他对感情的不断索取。Quarrels and feuds between tribes became incessant.部落间的争吵、反目成仇的事件接连不断....
I think that what he's suggesting is not humanly possible.我认为他的建议非人力可及.That all great art has this power of suggesting a world beyond is undeniable.不可否认,一切伟大的艺术都具有使人有超尘脱俗的浮想的力量.All are aposematuically colored , sugg...
You can sigh away half your youth if you choose to allow failed relationship to sadden you.如果你陷于失败的伤感中,你就会使前半生在叹息中度过.Don't sadden your friends and gladden your enemies.勿使亲者痛仇者快。Do not sadden your friends and gladden...
Watch out for bargains, but never buy dented cans.留意便宜货，但绝不要买表面凹陷的罐头。Bottles and cans were hurled on the terraces by the mob.暴徒向看台扔瓶子和罐子。Bean sprouts are also sold in cans.也有罐装豆芽出售。...