采用数值积分法求解相对量运动微分方程组，计算燃料相对质量因数。速度V =500m/s，时间t =3s，x方向位置x =674m，y方向位置y =329m，初始攻角 ，初始弹道倾角 -Using numerical integration method to solve the relative motion differential equations, the calculation of fuel relative quality factor. Velocity V = 500 m/s, time t = 3 s, x direction position x = 674 m, y = 329 m y direction position, the initial attack Angle, initial elevation Angle