故障 (gùzhàng): Malfunction or breakdown. It refers to a failure or problem that occurs within a system, causing it to stop working properly.
维护 (wéihù): Maintenance or upkeep. This term involves taking care of something regularly to ensure its proper functioning and prevent potential issues.
管理 (guǎnlǐ): Management or administration. It encompasses the processes and strategies used to oversee and control the operations of an organization or system.