由于操作原因，需要有不切断致动器能源的停机控制时，则必须监控和维持停机条件。 。
Where, , for operational reasons, a stop control that does not cut off the energy supply to the actuators is required, the stop condition must be monitored and maintained.
建立和维持一套有效的监控机制，对所有进出酒店出入口的承包人，供应商和酒店员工进行监控。
To establish and maintain a control mechanism to monitor the movement of all contractors, suppliers and employees leaving or entering the property through entrances and exits.
监控级主要负责组织级下达的任务或命令，保证和维持执行级中各控制器的正常运行。
Monitor level accomplishes the tasks or demands which are assigned by the organization level so that it can ensure and maintain all the controller running normally in the execution level.
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