lubricating oil analysis

例句：

1. 1.The lubricating oil analysis is crucial for the maintenance of machinery.
   润滑脂分析对于机器的维护至关重要。
2. 2.The engineer conducted a lubricating oil analysis to identify the cause of the engine's failure.
   工程师进行了润滑脂分析以确定发动机故障的原因。
3. 3. The lubricating oil analysis revealed that the engine was not properly maintained.
   润滑脂分析显示，发动机没有得到适当的维护。