Using mathematical statistics method, the productivity formula of horizontal Wells in low permeability reservoir is modified, which makes the productivity formula of horizontal Wells more perfect.
应用数理统计方法对低渗透油藏水平井产能公式进行了改进，使水平井的产能公式更加完善。
Supposing that the condition of diffusive sound field is known, a method to handle room sound field is given to avoid the complicated mathematical derivation, using system theory and statistics.
在扩散声场假设条件下，采用系统学、统计学等方法来处理室内声场，避免了繁杂的数学推导。
By using the method of questionnaire, mathematical statistics and logical analysis, this paper makes quantitative and dynamical analysis on condition of our hurdle race performance lag behind.
运用问卷调查、数理统计、逻辑归纳等方法，对我国跨栏跑项目落后状况影响因素进行量化和动态分析。
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