free-flight motion自由飞行
free-flight determination自由飞确定
free-flight characteristics自由飞行特性
free-flight模型自由飞试验
free-flight aerodynamics自由飞行空气动力学
free-flight rocket无控火箭
free-flight range自由飞行试验场
free-flight angle自由飞行角
free-flight trajectories自由飞行弹道
N（名词） the flight of a rocket, missile, etc, when its engine has ceased to produce thrust 惯性飞行