longitudinal movement的用法和样例：
例句
- Here two subsystems are only considered, which are the engine and airframe longitudinal motion.
这里仅考虑发动机和飞机纵向运动两个子系统。 - With the sample of longitudinal motion equation, calculating hydrodynamic coefficients by the potential fluid theory is introduced.
并以其纵向运动方程为例，详细介绍了用势流理论求解水动力系数的方法。
