initial flight造句

The a - darter will still notionally equip saaf gripens , but a long - awaited series of initial flight tests have yet to occur and the future of the programme is in doubt
A -标枪手理论上将装备南非空军的鹰狮战斗机，但是被期待已久的首飞测试仍然是遥遥无期，整个项目的未来仍充满变数。
Due to complicated continuous helicopter models and a wide range of constraints , numerical solutions on a mainframe computer have to take a long time . for a given set of initial helicopter states and flight parameters , optimal solutions are fitted by a fourier series . the coefficients of the fourier approximations are then interpolated as functions built by three - layer bp network with inputs of initial flight states and parameters
最后,由于直升机数学模型的复杂性,这给实时优化计算带来很大困难,本文研究了地面计算机计算的最优轨迹如何在机载计算机上实时显示,对飞行员的操纵提供参考,即把不同初始条件得到的最优轨迹曲线进行傅立叶部分级数化,得到傅立叶系数,选取合适初始条件作为变量,对这些最优轨迹曲线进行拟和,建立bp神经网络预测模型。
It's difficult to find initial flight in a sentence. 用initial flight造句挺难的