Using the modified CK direct method,we build the relationship between new solutions and old ones and find some new exact solutions to the (2+1) dimensional Konopelchenko-Dubrovsky(KD) equations, and obtairr some new exact solutions which include trigonome%通过利用修正的CK直接方法,建立了Konopelchenko-Dubrovsky(KD)方程组的新旧解之间的关系.利用李群分析方法,得到了(2+1)维KD方程的对称、相似约化和新的精确解,包括指数函数解、双曲函数解、和三角函数解.同时找到了此方程的无穷多守恒律.
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