The trajectory of vehicle barrier crash should be able to stay in the smooth transition, does not affect the normal running of the vehicle to leave the springback Angle and the smaller the.

车辆碰撞护栏的运动轨迹应能圆滑过渡，以较小的驶离角和较小的回弹量停留在不影响车辆正常行驶的地方。

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To consider the effect of the earth on the calculation of ultra range trajectory more accurately, an elliptic earth trajectory model adopting accurate normal gravity is established.

为了更精确地考虑地球对超远程弹道计算的影响，提出了一个计入精确正常重力的椭球地表弹道模型。

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A novel rapid method to design optimal-fuel interplanetary trajectory for low-thrust propulsion is presented based on normal trajectory approach.

针对星际探测任务中燃料最省小推力转移轨道问题，提出一种基于标称轨道的快速设计方法。

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Keynesian economists argue that the correct policy response is to boost government spending (G) through fiscal stimulus, allowing consumers and businesses time to adjust and recover, and to gradually remove that stimulus as the economy returns to its normal growth trajectory.

FORBES: Impossible Things And Our Economic Recovery