Take the EXCEL table as an example, the operation is as follows:

1. First open the EXCEL table and input the curve data to be expressed;

2. Then click "Insert" in the toolbar above the table;

3. You can see that there are chart types in the open insert function page. Click the "inverted triangle" next to the icon to open more chart options and select the desired display type;

4. Then the data will be displayed in the form of curves.