碎煤机

例句：

1. 1.The coal crusher is a machine that crushes coal into smaller pieces.
   煤炭破碎机是一种将煤炭破碎成更小颗粒的机器。
2. 2.The coal crusher is an essential tool for mining operations.
   煤炭破碎机是采矿作业中必不可少的工具。
3. 3.The coal crusher is used to reduce the size of coal particles before they can be transported or processed.
   煤炭破碎机用于在运输或加工前减小煤炭颗粒的大小。