longitudinal motion的用法和樣例：
例句
- Here two subsystems are only considered, which are the engine and airframe longitudinal motion.
這裡僅考慮發動機和飛機縱向運動兩個子系統。 - With the sample of longitudinal motion equation, calculating hydrodynamic coefficients by the potential fluid theory is introduced.
並以其縱向運動方程為例，詳細介紹了用勢流理論求解水動力係數的方法。
