rodding of cores

例句：

1. 1. The engineer used a special tool to rod the cores in the machine.
   工程师使用一种特殊的工具来压入机器中的芯。
2. 2. During the manufacturing process, the cores are often subjected to ruddling to ensure uniformity.
   在制造过程中，芯体经常受到压入处理，以确保均匀性。
3. 3.The ruddling process helps to improve the strength and durability of the material.
   压入过程有助于提高材料的强度和耐用性。