velocity n. 1.迅速;快速。 2.速度,速率。 3.周转率。 at a velocity of 100 miles per hour 用每小时一百英里的速度。 dart off with the velocity of a bird 像鸟一样迅速飞跑过去。 drag-free velocity无阻力飞速,真空飞速。 escape velocity(克服地球引力的)第二宇宙速度,逃逸速度。 final velocity (发射物的)终速。 initial [muzzle] velocity(发射物的)初速[腔口速度]。 uniform [variable] velocity匀[变]速。
Supernova explosion at song dynasty and the principle of constancy of light velocity 宋代超新星爆发事件与光速不变原理
The method of velocity of light measuring with the cg - iii of light velocity apparatus is improved , the measuring accuracy is increased significantly 摘要对cg -型光速测定仪的测量方法作了改进,通过实际测量的结果表明,该实验方法改进后,光速测量的精度有了很大提高。
He pointed out that , according to the principle of constancy of light velocity , the length of an object in the direction of its movement looked shorter when relative speed of the object was high enough 对这一论点谁也没有产生过怀疑,但有一个人对此首先发难,他就是爱因斯坦。本世纪初1905年,爱因斯坦提出:当物体的相对速度较大时,这个物体沿运动方向的长度“看上去”会变短。