At the same time, it also describes award grades set and the rationality of the bonus distribution with variance.
同时，又用方差来描述奖级设置和奖金分布的合理性，并建立了彩票方案合理性的判定模型。
At the same time, it also describes award grades set and the rationality of the bonus distribution with variance.
同时，又用方差来描述奖级设置和奖金分布的合理性，并建立了彩票方案合理性的判定模型。
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