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
矿山安全术语
Terms relating to mine safety
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
安全标志
safety mark
safety notice
safety certificate
clear mark [= clearing mark
safety sign
security marking
safety signs
内河交通安全标志
inland river traffic safety symbol
蓄光自发光型消防安全标志
self luminous fire safety sign