安全等级保护
information security classified protection
security classification of network
Multi-level Security Protection
安全等级动态概率评定
dynamic probability evaluation of dam security lev
安全等级划分
safety classification
safety status classification
建筑安全等级
safety grade of architecture
建筑结构安全等级
safety classes of building structures
生态安全等级
grade of ecological security
信息安全等级
information security levels
信息安全等级保护
information classified security protection
信息系统安全等级保护
information System Security Grading Protection
安全保护等级
security protection class