Participants undergo near-weightlessness as the plane is flown in parabolic maneuvers that create temporary reducedgravity.
当飞机以抛物线飞行并暂时抵消部分重力时，学员将能体验到近似失重的状态。
2
Based on the information of practical survey upon gravity change before and after Haicheng Earthquake, the paper presents a reduced representation for change of acceleration of gravity with time.
本文根据海城地震前后重力变化的实测资料提出重力加速度随时间变化的一种简化表示。
3
The illness we complained does not decrease the time. And the gravity of the illness does not reduced.