Based on rough set and mathematic statistics theories, the state evaluation model for mine ventilation system is proposed.
提出了一种基于粗糙集和数理统计理论的矿井通风系统状态评估模型。
The factors which influence the magnetic property of 1J116 anti-corrosion soft magnetic alloy were studied through the magnetization theory and the mathematic statistics.
分别从磁化理论和数理统计两个方面分析了影响耐蚀软磁合金1J116磁性能的因素。
With picture data analysis and contrast, literature study, experiment proof, mathematic statistics and other methods, this paper conducted an analysis to tennis forehand and backhand chop skills.
采用图像（片）资料分析对比、文献资料研究、实验验证、数理统计等方法，对网球正、反手切削球技术进行分析。
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