概述了青金石的产地来源和使用历史.The history of its provenance and application is summarized in this paper.他们是以顺时钟的方向环绕着青金石.They are circling the Lapis Lazuli stone in clockwise direction.他们是以顺时钟的方向环绕著青金石.They are circling the Lazuli st...
The model follows Weibull distribution, and in considering shortage whole backlogging and partial backlogging are distinguished.其中商品的退化率服从韦伯分配, 并且缺货期间的缺货数量则考虑全部待补及部分待补两种情形....