spacing chart

例句：

1. 1. The engineer drew a spacing chart to show the distribution of materials.
   工程师绘制了一张间距图来展示材料的分布。
2. 2. The spacing chart helped us understand the relationship between different parts of the machine.
   间距图帮助我们理解了机器不同部分之间的关系。
3. 3. The spacing chart was used to ensure that all components were properly aligned.
   间距图被用来确保所有组件都正确对齐。