其他信息，例如优先级、状态，或风险也需要维护。
Other information such as priority, status, or risk, need to be maintained as well.
在日常维护活动中，常常必须对维护状态或故障作出响应。
Often you must respond to a maintenance state or fault during routine maintenance activities.
这样的灵活性使得任何过程，维护或紧急状态下的金属流动方向都能够达到。
This flexibility accommodates any process, maintenance, or emergency metal flow direction to be achieved.
这样的灵活性使得任何过程，维护或紧急状态下的金属流动方向都能够达到。
This flexibility accommodates any process, maintenance, or emergency metal flow direction to be achieved.
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