hopper ash pan

例句：

1. 1. The hopper ash pan was used to crush the coal into a fine powder.
   压碎器灰盘被用来将煤炭碾成细粉。
2. 2. The workers used the hopper ash pan to clean the machine after each use.
   工人们使用压碎器灰盘来清理机器，每次使用后。
3. 3. The hopper ash pan is a crucial part of the coal preparation process.
   压碎器灰盘是煤炭准备过程中至关重要的一部分。