2. Administrative Domain. A group of hosts, routers, and networks operated and managed by a single organization.

管理领域。由一个组织负责运行和管理的一组主机、路由器和网络。

3. The site diagnosis for bearing failure of motor driving boiler water pump with time-

domain

waveform is introduced.

介绍了使用时域波形图的锅炉给水泵驱动电机轴承振动故障的现场诊断。