通过对某机组运行中发生的不稳定振动进行分析，结合现场数据，诊断出了振动故障。
The vibration malfunction was diagnosed through the analysis of unstable vibration in the operation of a unit and the field data.
分析了液压系统现场故障发生的特点，针对该特点提出了采用快速诊断仪器。
The character of hydraulic system site malfunction was analyzed, and the application of fast analysis appliance was put forward.
对断路器信号回路的常见故障进行了分析，对现场经验进行了总结，以供大家参考。
This essay analyzed the common troubles in the signal circuit and sum up the accumulated on-spot experience as reference.
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