the wire is 19 gauge thickness 什么意思

the wire is 19 gauge thickness导线的厚度是19双语对照例句:1.The designing principle and implementation of multi-channel intelligenceisotope thickness gauge based on multifunction card pci-1710. 基于pci-1710数据采集卡的多通道智能化同位素测厚仪设计原理与实现