据统计，上海和深圳股市的1600多公司在前三季度经营为四个以上的按年净现金流量下降。

According to statistics, Shanghai and Shenzhen stock markets more than 1600 companies have operations in the first three quarters of year-on-year decline in net cash flow into more than four.

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以贴现模型为基础，首先利用类比法等方法确定了资产剥离前后的不同折现率，然后分析了实质性资产剥离前后的净现金流量。

Based on the discount model, this paper confirms different discount rates of before-and-after virtual divestiture through ways, such as analogy.

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