After the first stage burns out it falls back to earth along a parabolic path while the engines of the second stage fire to thrust the rocket into an earth orbit.
当第一级烧毁后，沿抛物线的轨道落到地球，而第二级的发动机点火把火箭发射到地球轨道。
Finally it provides the application program and the parabolic curve of the discharging path line of the particle.
最后，给出了绘制粮食颗粒的卸料轨迹曲线的应用程序及图形。
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