graphite jig

例句：

1. 1. The engineer used a graphite jig to create the intricate design on the machine.
   工程师使用石墨夹具在机器上制作复杂的设计。
2. 2.The graphite jig was essential for the precision machining of the parts.
   石墨夹具对于零件的精密加工至关重要。
3. 3.During the assembly process, the graphite jig helped ensure that the components fit together perfectly.
   装配过程中，石墨夹具帮助确保部件完美契合。