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...
It is wishful thinking to expect deeper change under his leadership.指望在他的领导下发生更深层次的变革简直是痴心妄想。She has the intellectual form to take up the mantle of leadership.她具备担当领导职责的聪明才智。The army refused to accept orders from the pol...
克劳福德为她的职业生涯提供全方位建议。Crawford counsels her on all aspects of her career.他执意要她来劳福德参加万圣节聚会。He had insisted that she come up to Lawford for the Halloween party.埃德蒙德到这里的目的和克劳福德小姐完全一样.Edmund came on the very same business that ...
经过一系列相互转换的代谢途径达到了恒态性的条件.After series of related and interconvertible pathways, a steady - state condition is reached.质量与能量相等而又是可以互相转换的.Energy and mass are equal and interchangeable.酶是一种灵活的结构转换的内容.POD is a flexible struct...