cast-resin bushing

例句：

1. 1.The machine used to make the cast-resin bushing is very complex.
   用来制造铸造砂芯的机器非常复杂。
2. 2. The engineer designed the mold for the cast-resin bushing.
   工程师为铸造砂芯设计了模具。
3. 3.The process of casting the cast-resin bushing involves many steps.
   铸造铸造砂芯的过程涉及许多步骤。