口令安全性可选项
password security option
卷安全性
volume security
口令
countersign; password; sign and countersign; watchword
password
口令保护
password protection
口令保密性
password security
口令传递
password propagation
口令改变服务
password changed service
口令卡
password card
口令请求
password requirement
口令请求程序
password requestor
口令文件
password file
口令文件维护
password file maintenance
口令系统
password system
口令信息
password information
开启式弹簧安全阀
open-spring (loaded) safety valve
快泄安全阀
pop safety valve
劳动安全
labour safety
精神口腔科学
psychostomatology; stomatapsychology; stomatopsychology
井口
the mouth of a well
井口价格
wellhead price