DIN EN 60068-2-70:1996-07 環境測試 - 第 2 部分:測試 - 測試 Xb:手指和手摩擦引起的標記和文字磨損 (IEC 60068-2-70:1995)
Environmental testing - Part 2: Tests - Test Xb: Abrasion of markings and letterings caused by rubbing of fingers and hands (IEC 60068-2-70:1995); German version EN 60068-2-70:1996