The stillness of night was broken by the boom of a cannon.夜晚的寂静被隆隆的炮声打破。The sound of footsteps on the path broke the stillness.小路上的脚步声打破了宁静。There was a sudden stillness in the air.空中突然间一片沉寂....
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.A new method of quickly hypersonic waverider forebody configurations was developed.发展了一种基于分析法的高超声速乘波构型飞行器前体设计方法.A blended wing - ...