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

youdao

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

youdao