casting of piston ring pots

例句：

1. 1.The casting of the statue was completed successfully.
   雕像的铸造工作成功完成。
2. 2. The forging process is crucial in the production ofsteel.
   锻造过程在钢铁生产中至关重要。
3. 3.The founding of the company marked anew era in technology.
   公司的成立标志着科技新时代的到来。