closed-die forging

例句：

1. 1. The closed-die forging process is crucial for thequality of the final product.
   闭模锻造过程对于最终产品的质量至关重要。
2. 2. In closed-die forging, the metal is heatedand then forced into a mold to createa desired shape.
   在闭模锻造中，金属被加热并被压入模具以形成所需的形状。
3. 3. Closed-die forging isan efficient method for producing partswith complex geometries.
   闭模锻造是一种高效的方法，用于生产具有复杂几何形状的部件。