If you choose the outsourcing mode, three types of outsourcing models specific to the advantages and disadvantages are described, and examples cited evidence.
若选择了外包模式，则具体针对三种外包模式所具有的优势和劣势进行了说明，并列举实例进行佐证。
Firstly, the definition of exponential smoothing is presented. Then three models' characteristics are analyzed. How we choose these three models is based on these differences mainly.
首先，本文给出了三种指数平滑方法的定义，并分析了每种方法的特点，预测方法的选取主要取决于三种方法的差异性。
Firstly, the definition of exponential smoothing is presented. Then three models' characteristics are analyzed. How we choose these three models is based on these differences mainly.
首先，本文给出了三种指数平滑方法的定义，并分析了每种方法的特点，预测方法的选取主要取决于三种方法的差异性。
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