发生了对首都的新一轮火箭弹攻击。

There has been a renewed rocket attack on the capital.

《柯林斯英汉双解大词典》

最后，以某型航空火箭弹为例进行计算，得到关于距离和俯冲角的最佳攻击条件曲线。

Finally, a certain model of airborne rocket as an example for calculation, the optimum attack condition curve about attack distance and dive Angle of armed helicopter is drawn.

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