UVA防护等级PA
Protection grade of UVA PA
雷电防护等级
lightning protection level
lightning protection class
thunderbolt shield grade
lightning protection classification
Grade of thunder protection
多级防护
multiple grade protection
multistage protection
反差控制紫外线防护护目镜
ultraviolet contrast-control safety goggles
防护级
protection level
radiation protection level
三级防护体系
three stage protective system
信息分级防护
defence by difference information class
安全保护等级
security protection class
铺面优先养护等级
pavement maintenance prioritization