annular shelf

例句：

1. 1. The engineer designed the annular shelf to support the heavy equipment.
   工程师设计了环形搁板来支撑重型设备。
2. 2. The annular shelf is a popular choice for storing books and other items.
   环形搁板是存放书籍和其他物品的热门选择。
3. 3. The annular shelf was installed in the workshop to store tools and materials.
   环形搁板被安装在车间内，用来存放工具和材料。