record magnetism flaw detector

例句：

1. 1. The scientist recorded theexperiment for future reference.
   科学家为将来参考而记录了这次实验。
2. 2. Therecord of the event waskept by the historians.
   历史学家保留了这一事件的记录。
3. 3. Thefilm's director recordeda few key scenes in hisoffice.
   电影导演在他的办公室里录制了一些关键场景。