后备安全设备  back-up safety device

专设安全设备  protection equipment

矿山安全  coalmine safty; mine safety; safety of mines; mineral safty

矿山安全标志  Mine safety signs

矿山安全标准  mine safety standards

矿山安全法规  mine safety laws and regulations

矿山安全和健康管理部门  mine safety and health administration

矿山安全监管  mine safety administration

矿山安全健康  mine health and safety

矿山安全评价  mine safety evaluation

矿山安全生产  Mine Safety production

矿山安全事故  Mine safety accidents

矿山安全术语  Terms relating to mine safety

矿山设备  mining equiment; minig equipment; Mining equipment; Mine equipment

矿山设备车间  mining equipment plant

矿山设备维修  mining equipment maintenance

煤炭科学研究总院矿山安全技术研究分院  mine safety technology research branch; china coal research institute

型矿山安全标志  safety signs for mines

许用矿山设备  permissible mine equipment