Conclusion The basic cognitive abilities related to flying such as calculating, image rotating, instrument distinguishing and direction distinguishing, had very significant age differences.
结论战斗机飞行员的计算、表象旋转、仪表认读和方位判断等与飞行有关的基本认知能力有明显的年龄差异。
The method of direction distinguishing not only is that used in heat transfer data processing of heat exchanger, but it is also used to find the solution of norm equation for pressure drop test.
方向鉴别法不仅可以用于换热器传热试验数据处理，也可用于压力降试验准则方程的求解。
A method of distinguishing watershed borderline, of ascertaining water flow direction on a slope, and of calculating watershed parameters with digital elevation model is introduced and discussed.
探讨了利用数学高程模型识别流域分水线、确定坡面水流方向以及计算流域参数的方法。
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