炮兵打靶需要让空军配合练习，这样时间地点都受到制约，并且真飞机风险大训练成本昂贵。
Target practice needs the cooperation from the Air Force so time and place are limited. Moreover, the manned aircraft is dangerous and is expensive.
为缩短飞行指挥员的训练周期，提高训练效率，降低训练成本，设计并实现了基于PC的飞行指挥训练系统。
In order to improve the level of training flight commander, improve training efficiency, reduce training costs, the "PC-based training of the simulator of flight command system" was developed.
比较而言，学习矢量量化网络在分类能力和训练成本方面更胜一筹，而概率神经网络则在计算负载和易用性方面更好一些。
By comparison, LVQ network was better than the others in classification ability and training cost, and PNN network in computation load and easy use.
比较而言，学习矢量量化网络在分类能力和训练成本方面更胜一筹，而概率神经网络则在计算负载和易用性方面更好一些。
By comparison, LVQ network was better than the others in classification ability and training cost, and PNN network in computation load and easy use.
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