...步发动右脚顺势上前使劲蹬跨一大步,到网前,你不能改变容貌,但你可以展现笑容; 也就是说(That is)从圆心(Center of a circle)(指保卫位子)发动到网前,是一个(A)半步和一个大步(Step),一共(Altogether)是一步半到网前。
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A diameter passes through the center of a circle.
直径从圆心穿过。
A game originating in Scotland in which two four-person teams slide heavy, oblate stones toward the center of a circle at either end of a length of ice.
冰上溜石游戏:一种源于苏格兰的游戏,两队比赛,每队四人,将沉重的椭圆形石头滑向位于冰道两端的圆圈的中心。
With the Lagrange multiplier method, the minimum distance of the center of a circle and a quadric surface was provided and the tangency condition of curve and surface was given.
利用拉格朗日乘子法求解二次曲线和二次曲面之间的最小距离,给出了曲线与曲面相切的条件。
They have a center,and arms of matter that seem to circle the center like a pinwheel.
VOA: special.2009.04.29
When a particle moves in a circle, it has an acceleration towards the center of this size, v^2 over R.
当一个质点在圆周上运动时,它有一个指向圆心的加速度,v^2 / R
That means the acceleration is pointing towards the center of the circle and it has a magnitude a.
也就是说加速度,始终指向圆心,其模长为 a
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