我来把更一般的形式，写出来吧，在一维空间中，位置和速度，作为时间函数的，一般形式，这里的加速度是一个常数。
I now would like to write down, in most general form the equation for the position and the velocity as a function of time for a one-dimensional motion whereby the acceleration is constant.
上一课的方程我们，已经比较熟了，常数加速度的，一维运动方程。
We know the equations so well from our last lecture from one-dimensional motion with constant acceleration.
请注意此处的加速度，是一个常数，不随时间变化而变化，不过速度是变化的。
So notice that the acceleration is constant in time, is not changing but the velocity is changing.
当我们考虑到重力时，物体受重力，加速度影响，重力加速度，是一个常数。
When we have gravity an object is influenced by the gravitational acceleration and the gravitational acceleration is a constant.
把这一标准差和两次的平均值相比较，我们就能发现他们很相像，（因为我们知道重力加速度是个常数）。
Comparing the ratio of standard deviation to the average for these two distributions shows that they are similar.
但是时间常数越低，允许通过的水平加速度噪声就越多。
But the lower the time constant, the more horizontal acceleration noise will be allowed to pass through.
针对直线驱动系统，提出一种新的加速度前馈控制策略及前馈质量与电机常数的校准算法。
A novel acceleration feedforward control strategy and a calibration algorithm on feedforward mass and motor constant were proposed for linear driving system.
天文学家于1998年发现到宇宙正在加速膨胀，但其加速度所对应到的宇宙常数，却是量子理论预测值的10- 120倍。
In 1998 astronomers discovered that the universe's expansion is accelerating at a rate consistent with a cosmological constant 10-120 times the value predicted by quantum theory.
肌肉最大收缩力与负荷的大小成正比；肌肉收缩的最大加速度可能是个常数。
The maximum contraction force of muscle is directly proportional to it's load and the contraction acceleration of muscle may be a fixed number.
肌肉最大收缩力与负荷的大小成正比；肌肉收缩的最大加速度可能是个常数。
The maximum contraction force of muscle is directly proportional to it's load and the contraction acceleration of muscle may be a fixed number.
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