flaky graphite

例句：

1. 1.The flakes of graphite were scattered across the table.
   石墨片散落在桌子上。
2. 2.The flakes of graphite were used in the production of pencils.
   石墨片被用来生产铅笔。
3. 3. The flakes of graphite were used as a lubricant in the machine.
   石墨片作为机器的润滑剂使用。