标准号:NBN-EN 60051-4-1994
中文标准名称:电测量器械.直接作用的模拟指示器和其附件.第4部分:频率计的特殊规则
英文标准名称:Direct acting indicating analogue electrical measuring instruments and their accessories Part 4: Special requirements for frequency meters
发布日期:1994/10/7 12:00:00
实施日期:1999/12/31 12:00:00