UNE-EN 60051-6:1993
电气测量仪器,模拟显示直接活动和配件.第6部分:阻抗测量仪和电导仪的特别规定(官方版本60051-6:1989)
Electrical measuring instruments, analog display direct action and accessories. Part 6: Special provisions for impedance measuring instruments and conductivity meters (Official version 60051-6: 1989)