The width to width ratio of grid fin was an important parameter influencing the aerodynamics of grid fins.
格宽翼弦比是影响栅格翼气动特性的一个重要几何参数。
2
To enhance recall ratio and precision ratio of information retrieval, the paper designs the model of spam filtering based on semantic grid.
本文以增强语义信息，提高搜索的查全率和查准率为目标，设计了基于语义网格的垃圾邮件过滤模块。
3
The results of numerical experiments, the statistics of speedup ratio and parallel efficiency all show the success of parallel unstructured grid generation method and parallel computation algorithm.