网络时间协议,(一个使网络上的计算机时间同步的协议)
Network Time Protocol
(NTP) A {protocol} built on top of {TCP/IP} that assures
accurate local timekeeping with reference to radio, atomic or
other clocks located on the {Internet}. This protocol is
capable of synchronizing distributed clocks within
milliseconds over long time periods. It is defined in {STD}
12, {RFC 1119}.