magnetic inspection oil

例句：

1. 1. The magneticinspection oil is used to detect the presenceof iron in the sample.
   磁性检测油用于检测样本中是否有铁。
2. 2. The magnetic inspectionoil was tested for its effectiveness in detecting hidden metals.
   磁性检测油被测试过其检测隐藏金属的有效性。
3. 3. Themagnetic inspection oil is a crucial tool forinspecting electrical equipment.
   磁性检测油是检查电气设备的关键工具。