Earth gravity mechanism for plate motion is investigated primarily.
初步探讨了板块运动的地球重力学机制。
Method of regional height transformation based on earth gravity field model;
描述了地球重力场模型和中国海及邻域重力异常的特征。
Otherwise gravity will pull you back down to the Earth.
否则，地心引力会把你拉回地球。
The gravity on Mars is a third of that on Earth.
火星的重力是地球的1/3。
Gravity exerts a natural pull straight downwards, towards the centre of the earth.
地心引力施加一个垂直向下，指向地球中心的自然拉力。
Gravity exerts a natural pull straight downwards, towards the center of the earth.
地心引力施加一个垂直向下，指向地球中心的自然拉力。
My muscles were used to the gravity of Earth.
我的肌肉已经习惯了地球万有引力。
The earth is round because of gravity.
地球是由于重力而成为球形的。
It's because we leave the pull of gravity that comes from the earth.
这是因为我们离开了来自地球的地心引力的拉力。
The gravity on Mars is only about three-eighths of that on Earth.
火星引力大约只有地球引力的八分之三。
It is gravity that keeps us from falling off the earth.
是重力使我们不至于从地球上抛出去。
But for gravity, things on earth will fly into the air.
要是没有引力，地球上的东西会飞到天上去。
The force of Gravity makes things fall to earth.
地球引力使物体落到地面上。
All objects are pulled towards the centre of the Earth by the force of gravity.
所有的物体都由于引力而拉向地球中心。
The earth is round because of gravity .
地球是由于重力而成为球形的。
What would happen if the gravity on Earth was suddenly turned off?
如果地球引力突然消失会发生什么情况？
The first experiment had nothing whatever to do with gravity, the attraction of the earth.
第一个实验跟重力，即地球的引力无关。
He quickly learns that gravity on Mars is much less than on Earth.
他很快知道了火星上的万有引力比地球上小很多。
The lunar gravity is about one-sixth that on earth.
地心吸力把物体吸向地心。
That the earth has gravity is clear.
很清楚地球是有引力的。
We couldn't stay on the earth if there were no gravity.
假设没有地心引力咱们就不能呆在地球上。
The force of gravity on the moon is much less than on the earth .
月球的引力比地球上的引力小得多。
Gravity is the force that holds you down on Earth.
重力是武力，认为你在地球上。
In this fundamental work, curvature and the gravity field of the earth must be considered.
在这项基础工作中，地球的曲率和重力场都应被考虑。
No matter where you go on the earth, you will feel the gravity.
无论你走到地球的什么地方，你都会感觉到地引力。
The lunar gravity is about one-sixth that on earth.
月亮的引力大约为地球的六分之一。
The lunar gravity is about one-sixth that on earth.
月亮的引力大约为地球的六分之一。
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