Electrical apparatus for use in the presence of combustible dust - Part 2-1: Test methods; methods for determining the minimum ignition temperatures of dust; German version EN 50281-2-1:1998 + Corrigendum 1999
可燃性粉尘环境用电气设备.第2-1部分:试验方法;粉尘最低着火温度的测定方法;德文版EN 50281-2-1:1998+勘误表1999