basic flowsheet of coal preparation

例句：

1. 1. Theengineer drew a basic flowsheet for thenew project.
   工程师为新项目绘制了基本流程图。
2. 2. The company used a basicflowsheet to manage its inventory.
   公司使用基本流程图来管理其库存。
3. 3. Theteacher explained the basic flowsheet of theexperiment to the students.
   老师向学生们解释了实验的基本流程图。