晚更新世－全新世
epipleistocene-holocene
late pleistocene—holocene
改进的安全通信
improved safety communication
安全通信
and Safety communication
Safety communication
Safety-related Communication
security communication
Secure
safe-communition
secure communication
安全通信程序
safety communication procedure
安全通信协议
security communication protocol
secure communication protocol
safety communication protocol
safetycommunication protocol
贝尔通信研究所
BELLCORE BELL COmmunications REsearch
Bell system
Bell communications research
Inc
Bellcore
点对点安全通信机制
P2PSCM peer-to-peer secure communication mechanism
端到端通信安全
secure communication between mobile terminals
多点安全通信
Multi-point vital secure commun ication
功能安全通信
Functional safety communication
光通信研究
Study on Optical Communications
国家安全通信与信息系统安全委员会
NSTISSC National Security Telecommunications and Information Systems Security Committee
航行安全通信
navigation safety communication