engineering casting

例句：

1. 1.The engineer was asked to design a new machine for the company.
   工程师被要求为公司设计一台新机器。
2. 2. The casting process is crucial in the manufacturing of metal parts.
   铸造过程在金属零件的制造中至关重要。
3. 3.The engineer used his expertise to solve the problem and improve the efficiency of the casting process.
   工程师凭借他的专业知识解决了问题，提高了铸造过程的效率。