boiler barrel course

例句：

1. 1. The boiler barrel course isa popular choice for students who want tolearn about the history of steam engines.
   锅炉筒形课程是那些想要了解蒸汽机历史的学生的热门选择。
2. 2. The boilerbarrel course is designed toteach students about the basic principlesof steam power.
   锅炉筒形课程旨在向学生传授蒸汽动力的基本原理。
3. 3. Theboiler barrel course is often used as anintroduction to the study of engineering and technology.
   锅炉筒形课程通常作为对工程和技术学习的入门课程。