介绍了齿轮油泵的结构原理，阐述了其常见故障的原因，并指出了预防故障的措施，为预防故障及修理油泵打下良好基础。
This paper introduces the structure and principle, elaborates common fault causes and points out the measures for prevention of fault, which lies the base for prevention and repairing of gear pump.
为了预防出现进程故障和包含在任何分区中的数据丢失，需要维护这些分区的副本。
To protect against the failure of a process, and the loss of the data contained in any partitions located there, replicas are maintained for the partitions.
应指定接地故障断路器的电气预防维护任务，此项任务要求对装置进行定期测试。
There is an electrical preventive maintenance task assigned to the Ground Fault Circuit Interrupter, that requires periodic testing of the unit.
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