Early Chinese scientists discovered that they could make an explosive substance by mixing sulphur, charcoal and saltpeter.
早期的中国科学家发现把硫磺，木炭和硝石混合在一起可以制作出能够爆炸的物质。
Because cyclopentane is a flammable and explosive substance, the station with large quantity of it belongs to major hazard installation.
广东科龙集团无氟生产线中的预混站是使用环戊烷危险物品配制发泡剂的重大危险源，燃烧爆炸事故风险较大。
Inflammable and explosive poisonous gas are gas occurrence boiler device of the primary risk involved in substance, the main composition is carbon monoxide (co), hydrogen (H2), nitrogen.
易燃易爆有毒的煤气是煤气发生炉装置涉及的最主要的危险物质，主要成分为一氧化碳(CO)、氢气(H 2)、氮气。
NO gas , wapor or dust that may severely affect the insulation of contact box, no explosive or corrosive substance.
无严重影响触头盒绝缘的气体、蒸汽、灰尘及其它爆炸性和腐蚀介质的场所。
NO gas , wapor or dust that may severely affect the insulation of contact box, no explosive or corrosive substance.
无严重影响触头盒绝缘的气体、蒸汽、灰尘及其它爆炸性和腐蚀介质的场所。
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