The theories centering about Yang-Baxter equation ( YBE ) are systematic and successful theories when they are used to deal with some nonlinear model .
以杨-巴克斯特方程为中心的有关理论，是比较系统的处理某些非线性模型的成功理论。
Ybe you 'd careto explain this .
也许你会愿意解释一下这个。
ybe