The draw-out-time is one of the most important ballistic parameters of the low-drag parachute bomb.
减速伞拉直时间是描述低空低阻伞弹道特重要要参量。
The desire to increase landing safety margins for the Space Shuttle Orbiter led to decision to implement a Drag Parachute System into the Orbiter Vehicle.
航天飞机轨道器设置阻力伞的目的在于增加其着陆的安全性。
Of course, then they open the parachute and then the air drag increases enormously and then they slow down even further.
当然，当他们打开，降落伞，空气阻力剧增，他们下降的更缓慢。
Of course, then they open the parachute and then the air drag increases enormously and then they slow down even further.
当然，当他们打开，降落伞，空气阻力剧增，他们下降的更缓慢。
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