求翻译：灰色预测是对既含有已知信息又含有不确定信息的系统进行预测；灰色预测模型GM(1，1)具有思路简单、数据单纯、运算简便等特点。是什么意思？

The gray prediction is to predict both known to contain information system with uncertain information; gray prediction model gm (1,1) has the characteristics of simple ideas, simple data, computing simple.

Gray is known for containing both information and the system does not determine if the information for forecasting; gray GM forecast model (1, 1) has a simple, data lines, simple operation and easy.

The gray forecast is to both includes the known information and to include the indefinite information system to carry on the forecast; Gray forecast model GM(1,1) has the mentality simply, the data pure, the operation simple and so on the characteristics.

Grey prediction is on known information and forecasting systems with uncertain information; grey model GM (1,1) with the idea of simple simple, easy operation, data, and other features.

正在翻译，请等待...