External Ballistics deals with projectile flight. The trajectory, or path, of a projectile is subject to the forces of gravity (see gravitation), drag, and lift.
外弹道学是研究射弹的飞行，弹道是射弹在重力、拖曳力和升力作用下的飞行路线。
New cable substantial drag chain appearance more beautiful, external ornament has yellow buckle.
新型电缆护线拖链外观更加漂亮、外部点缀有黄扣。
Drag-and-drop the required items from the external library panel to the current project's library.
将需要的项目从外部库拖曳至当前项目库中。
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