UL 60745-2-1 (ND)-2004 UL60745-2-1手持式电动工具.安全性.第2-1部分:钻孔机和冲击钻孔机的详细要求
National Differences For UL 60745-2-1 Hand-Held Motor-Operated Electric Tools - Safety - Part 2-1: Particular Requirements for Drills and Impact Drills (Second Edition; Reprint with Revisions Through and Including October 26, 2011)