这是重力加速度，如果在这掉一个物体。
That's the gravitational acceleration if we drop an object here.
我们通常，用字母g表示，重力加速度。
And we write, often for that gravitational acceleration, the letter "g".
单摆实验是用来测量当地重力加速度的。
Mono-pendulum experiment is used to measure local weight acceleration of gravity.
在联盟号发射的时候，宇航员所承受的是4倍的重力加速度。
During launch of the Soyuz craft, cosmonauts experience four times the force of gravity.
在联盟号发射的时候，宇航员所承受的是4倍的重力加速度。
During launch of the Soyuz craft, cosmonauts experience four times the force of gravity.
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