EN 60512-1-3-1997 电气设备用机电元件.基本试验过程和测量方法.第1部分:一般检查.第3节:试验1c:电气啮合长度 IEC 60512-1-3-1997
Electromechanical Components for Electronic Equipment Basic Testing Procedures and Measuring Methods Part 1: General Examination Section 3: Test 1c - Electrical Engagement Length