With the flourish of the tourism market, the development of the market tends to be similar, lacks the characteristic condition, which is more and more obvious.
随着旅游市场的繁荣，各地旅游市场的建设趋于雷同、缺乏特色的状况也越来越明显。
One is employee characteristic and the other is company condition.
一个是员工的性格，另一个是公司条件。
The characteristic of this model is only to know basic and natural boundary condition, then the stream function and flow velocity required on the boundary are obtained.
这一模型的特点只需要知道边界上的基本边界条件和自然边界条件，就可以得到边界上所需要求的流函数和水流速度；
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