Since reader Li Xiaobo once again reported the issue of poor support for formulas on mobile devices on this site, I have made some modifications to the formula display of the website. If readers are browsing on a computer, they should not feel any change in the website. However, if browsing on a mobile terminal, they should find that the formulas originally parsed by MathJax have turned into formulas in image format.
Indeed, this is a very compromised solution. It identifies the client; if it is a mobile device, it uses the image formula display method. No errors have been found with image formulas on mobile devices for the time being (please test them). This method has some drawbacks, such as the image-format formulas not being as aesthetically pleasing, and Chinese characters within the formulas cannot be displayed.
The formulas call http://latex.codecogs.com/gif.latex, for which I express my gratitude. Everyone is welcome to test and provide feedback: http://bbs.spaces.ac.cn/topic/show/9
Please include the address of this article when reposting: https://kexue.fm/archives/3576
For more detailed reposting matters, please refer to: Scientific Space FAQ