The motion of spherical pendulum in z-direction is described by nonlinear oscillation equation.

用非线性振动方程描述了球摆在 z 方向上的运动。

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And the flux in the Boltzmann Equation is represented as, and I will not repeat it every time, location, energy, direction and time.

在波尔兹曼方程方程的流量是，表现的是，我不会每次都重复一遍，位置，能量，方向，时间。

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the position of the highest point P we first ask ourselves the question from equation number four: 0 when is the velocity in the y direction zero?

为了找到最高点P的所在,我们首先得,解答我们刚才提出的问题：,究竟何时y方向上的速度减为？

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Infinity is the force when we're thinking about it and our brains, negative infinity is when we actually plug it into the equation here, and the reason is the convention that the negative sign is just telling us the direction that the force is coming together instead of pushing apart.

说力有多大时，我们想到的,是无穷大，而方程解出来的,是负无穷，这是因为习惯上,我们用负号表示力的方向,是相互吸引而不是相互排斥的,所以我们可以用库仑定律。

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This new app will take this idea into a more extreme direction and remove the voluntary part of the equation.

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What irks me about Obama is that he wants to increase the burden of government spending, which means the numerator in the equation is going in the wrong direction.

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