在一定假设下，计算得到了公司投资决策的成本转折点。
Based on some assumptions, the critical cost point of company investment is computed.
其次在一定假设下，对产品进行定价，获得定价闭合解；
Secondly, under the certain assumption, the closed form solution of the product is obtained.
在一定的假设下，我们证明其驻波解是渐近稳定的。
It is proved that the stationary wave is asymptotically stable under some assumptions.
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