如果一个项目的现金流仅包含一次符号变化该项目肯定有唯一的IRR。

If a project's sequence of cash flows contains exactly one change in sign, the project is guaranteed to have a unique IRR.

youdao

例如在项目1和2中现金流的符号序列是- + + + + +。

For example, in projects 1 and 2, the sign of the cash flow sequence is - + + + + +.

youdao

如果活动内外的数据或控制流与理解导致建模错误的原因有关，我们将使用此图上半部分中的符号。

If the data or control flow in and out of activities is relevant to understand the cause of the modeling error, we use the notation in the upper half of the figure.

youdao