coal dust engine

例句：

1. 1. The coal dust engine is a crucial component in the power generation process.
   煤尘发动机是发电过程中的关键部件。
2. 2.The engineers were tasked with designing and building the coal dust engine.
   工程师们被指派负责设计和建造煤尘发动机。
3. 3.Due to its efficiency and reliability, the coal dust engine has become a popular choice for industrial applications.
   由于其高效性和可靠性，煤尘发动机已成为工业应用中的一种流行选择。