Obviously the force of gravity Mg is acting vertically downward.

显然重力的Mg作用垂直向下.

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What is the force of gravity at sea level?

海平面的地球引力为多大?

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The force of gravity pulls things towards the earth's centre.

地心吸力把物体吸向地心.

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For calculating the force of gravity on a satellite, the radius of the earth is irrelevant.

计算地球作用于卫星的重力时, 地球的半径是无关紧要的.

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The attraction of the earth for other bodies is called the force of gravity.

地球对其它物体的吸引称为地心引力.

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This force of attraction is known as the force of gravity.

这种吸引力通常叫做重力.

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Their force of gravity is low, and their temperatures are high.

它们的重力加速度小, 而温度高.

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The force of gravity makes things fall to earth.

地心引力使物体落向地面.

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For example, the force of gravity – it began here.

比如说, 地心引力――就开始于这.

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Objects fall to earth because of the force of gravity.

物体因为地心引力的力量落到地球.

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What is force of gravity at sea level?

“海平面”的地球引力为多大?

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What is the force of gravity sea level?

海平面的地球“引力”为多大?

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This lack of uniformity of the force of gravity results from a number of factors.

引力的这种非均匀性是由许多因素引起的.

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Anything that is dropped falls to the ground, pulled by the force of gravity.

任何跌落的物体均被地心吸力所吸引而落向地面.

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It is the force of gravity that makes heavy things fall toward the ground.

(强调主语)是地心引力使重物落向地面.

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