According to data analysis of actual measure, this paper obtains perpendicular line current velocity coefficient of measuring section and measuring discharge coefficient on the bridge.
经过实测资料的分析，得出了呼玛桥水文站桥测断面的垂线流速系数以及桥测流量系数。
The experiment shows that by changing the velocity coefficient , the separation of boundary layer on pump vane can be controlled, and the performance of pump is improved and its hydraulic efficiency.
实验证明通过改变叶片型线参数方程中的速度系数的取值，可以控制边界层的分离，进而改善泵的性能，提高其水力效率。
However, increasing the velocity at a given spin reduced the lift coefficient.
但是，旋转速度不变的情况下增加球速会降低升力系数。
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