...池机车 flameproof battery locomotive 防爆设备 explosion-tested equipment; explosion-proof equipment; approved apparatus 防爆钢筋 bursting reinforcement ..
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approved shot firing apparatus 安全放炮器耐爆放炮器
approved breathing apparatus 认可呼吸器具
approved d apparatus 合格设备 ; 已鉴定设备
breathing apparatus of approved 认可型呼吸器
approved d shot firing apparatus 安全放炮器耐爆放炮器
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