This code is called the universal product code ( UPC ) It is designed to add speed and efficiency to stores by using computers .

这种条形码叫做 产品 的 统一 条形码（PC）它的目的是通过使用计算机提高商店的营业速度和效率。

This algorithm was universal and used in some enterprises ' Product Data Management ( PDM ) systems which created the branches by device bill and formed the leaves by draft code so the product structure tree was created automatically .

此算法已应用于设计研究院的 产品数据管理系统中，形成了以设备清单生成产品结构树枝干、以图纸 代号生成叶节点的产品结构树自动生成算法。

Cannot determine media identity or universal product code .

无法检测介质类型或 通用 产品 代码。