The equations of axial momentum and radial momentum are made during the presented inflation of parachute, and the parachute opening load in low atmospheric density is studied on the basis of them.

文章根据建立的降落伞充气过程中轴向和径向动量方程，研究了低密度大气中降落伞的开伞动载。

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At 0.2 seconds after initiation, the seat deployed the main parachute. Stricklin didn't have time to wince from the shock of it opening.

弹射之后0.2秒，座椅的主降落伞打开，可斯特里克林根本来不及紧缩身体以避开降落伞打开时的冲击力。

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After the first assembly of your parachute you must perform an opening test and, before every take off, you must control the proper position of the handle.

在您第一次装配好滑翔伞之后，您必须进行一个检测，在每次离开地面之前，您必须控制手柄的适当的位置。

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Base jumping sees participants launch themselves from a surface and free fall from high altitudes before opening a parachute.

BBC: Mother's grief at base jump death of Gary Harbird

Base jumping sees participants launch themselves from a surface and free fall from predominantly low altitudes before opening a parachute.

BBC: Devon base jumper Gary Harbird dies in Switzerland

But these are static measures ill-suited to crises, when prices fall so fast that, by the time the protection is activated, it is already too late: the financial equivalent of opening a parachute too close to the ground.

ECONOMIST: When the sea dries up