combined casting

例句：

1. 1.The engineer used a combination of materials to create the new design.
   工程师使用多种材料创造了新的设计。
2. 2. In this process, we combine different techniques to achieve our goals.
   在这个过程中，我们结合不同的技术来实现我们的目标。
3. 3.The company has developed a new method for combined casting that reduces waste and improves efficiency.
   该公司开发了一种新方法用于组合铸造，减少了浪费并提高了效率。