diagram of element ratio

例句：

1. 1.The engineer drew a diagram of the new building's layout.
   工程师绘制了新建筑物布局的图。
2. 2. The scientist used a diagram to explain the chemical reaction.
   科学家用图来解释化学反应。
3. 3. The map is a great way to visualize the city's layout.
   地图是可视化城市布局的好方法。