Computation and research of the zero-zero jettison trajectories of the aircraft canopy

某 型 歼击 机座 舱盖 零零 抛 放轨迹计算研究

5 minutes left in the first half still zero-zero .

上半场还有5分钟，还是 0 比 0。

A Study on the development of zero-zero building in mountain area in Nanping of Fujian province

福建南平发展山地 双 零建筑的研究