SGDI

例句：

1. 1. The SGDI model is widelyused in the field of financial engineering.
   SGDI模型在金融工程领域得到了广泛应用。
2. 2. The SGDI model has beenproven to be effective in predicting stockmarket trends.
   SGDI模型已被证明在预测股市趋势方面是有效的。
3. 3. TheSGDI model has been widely adoptedby financial institutions as a tool for riskmanagement.
   SGDI模型已被金融机构广泛采用，作为风险管理的工具。