block casting

例句：

1. 1. The mold was made from a block of stone and cast the molten metal into it.
   模具是由一块石头制成的，将熔融金属倒入其中。
2. 2.This technique is used in block casting to ensure uniformity in the final product.
   在块状铸造中，这种技术用于确保最终产品的均匀性。
3. 3. The block casting process is time-consuming and requires skilled craftsmen to produce high-quality castings.
   块状铸造工艺耗时且需要熟练工匠生产高质量的铸件。