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earth crust gravity | |||
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pull of the Earth (The ships will rise from the surface and accelerate to a high speed to pass over into the area where the pull of the Earth will begin speeding them up in the long fall back toward the station. alex) | |||
earth gravity | |||
terrestrial gravity | |||
earth's gravity |
сила притяжения земли : 1 phrase in 1 subject |
Gyroscopes | 1 |