This is a hot fix,the sever does not need to be updated.
The client recommends an update,fixes the bug that does not render when the length of the rigid catenary is 1,and the bug that reads the file in a loop.
这是一个热修复(hot fix),服务端不用安装。
-修复了刚性接触网长度为1时不渲染的BUG
-修复了重复地读取文件的BUG