| 释义 |
guide bars 导向条 Lines on a bar code that indicate the beginning and end of the bar code pattern and also separate item in the coding pattern. In UPC the guide bars comprise two thin black lines that are slightly longer than the code lines. 条形码上的线条,用以指明条形码模式图的起点与终点,并隔开编码模式图中的各个细 项。在通用产品代码(UPC)中,导向条由两条细黑线组成,它们比码线稍长一点。 |