unified screw-thread class的意思|示意
美 / /
英 / /
统一螺纹类
unified screw-thread class的网络常见释义
统一螺纹配合等级 ...thread gauge 统一标准小直径螺纹规 unified screw thread gauge 统一标准螺纹规 unified screw-thread class 统一螺纹配合等级 ..