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1·This paper presents the classification of zone for hazardous area, marking for ex electrical equipments, selection of ex equipment and the design on electrical wiring used in explosive atmosphere.

文章阐述了爆炸性粉尘环境、爆炸性气体环境危险区域的范围划定，防爆电气设备的标志、防爆电气设备的选型及爆炸性环境电气线路的设计。