摘要
建立了交货时间为随机变量的存储模型,并给出其解.该模型具有计算方便、实用性强的特点.
This thesis established the model which the time of delivery is variable and gave it＇ s solution. The model is both easier in calculation and wider in practice.
出处
《重庆文理学院学报（自然科学版）》
2009年第2期41-42,共2页
Journal of Chongqing University of Arts and Sciences
关键词
存储模型
随机变量
期望
storage model
random variable
expectation
