Among the various approaches, the Darboux transformation is a very powerful tool for constructing soliton solutions of the NLEEs from a trivial seed.
其中达布变换是一种十分有效的方法，它能够从孤子方程的一个平凡解出发求出一系列孤子解。
Based on Darboux theory, this paper discussed the integrability of the Riemann Integral and provides a necessary and sufficient condition for integrability.
文章利用达布和理论，讨论了黎曼积分的可积性问题，给出了一个可积的充分必要条件。
Based on Darboux theory, this paper discussed the integrability of the Riemann Integral and provides a necessary and sufficient condition for integrability.
文章利用达布和理论，讨论了黎曼积分的可积性问题，给出了一个可积的充分必要条件。
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