煤炭开发过程的资源不安全因素
non safety factor of resource during coal production
non safety factor of resource during coal producti
安全因素
Safety factor
safety factors
secure factors
Factor of safety
security factors
factor of safety [= safety factor
Fire Safety factor
factor formation volume
safety door
个人安全报警系统
PASS＝personal alert safety system
个人安全装备
personal safety equipment
个人因素
Individual factors
personal factors
personal factor
Individual factor
Ontogentic level
demographics characteristics
不安全船舶及扣留
unsafe ships and detention
不安全的电气电路
unreliable electrical circuit path
不安全的集血系统
unsafe blood collection system
不安全的爬杆器
unsafe climbing equipment
不安全的爬高作业
unsafe climbing procedure