coarse granular cast

例句：

1. 1. The engineer used a coarse granular cast to make the mold.
   工程师使用粗粒型铸件制作模具。
2. 2.Coarse granular casts are commonly used in construction for their strength and durability.
   粗粒型铸件因其强度和耐用性而常用于建筑施工。
3. 3.The coarse granular cast was used as a base for the new machine's parts.
   粗粒型铸件被用作新机器零件的基础。