<img src="http://img.jishulink.com/upload/201701/1483794180087_2.png" title="2.png" alt="2.png" width="750" height="470" data-mobile-src="http://

<img title="image.png" style="max-width:760px;" alt="image.png" src="http://img.jishulink.com/upload/201701/1483974905634_image.png"/>Interaction模块中，Equation功能，点进去会有个黄色的Tip，按照它的提示设置