可燃性粉尘环境用电气设备用外壳和限制表面温度保护的电气设备粉尘防爆照明开关
Electrical apparatus for use in the presence of combustible dust Electrical apparatus protected by enclosures and surface temperature limitation-Specification for attaratus-Dust and explosion-proof lighting switch

2008-02-01

可燃性粉尘环境用电气设备用外壳和限制表面温度保护的电气设备 粉尘防爆插接装置
Electrical spparatus for ues in the presence of combustible dust Electrical apparatus protected by enclosures and surface temperature limitation-Specification for attartus-Dust and explosion-proof plug and socket

2008-02-01

可燃性粉尘环境用电气设备用外壳和限制表面 温度保护的粉尘防爆操作柱

2013-12-31