在建立了中国煤炭总产量的GM(1,1)灰色系统动态预测模型，通过检验，证明建立的模型是正确的，具有一定的参考价值。
The GM (1, 1) grey forecasting dynamic model about China's coal output, which is tested, is proved that the model is correct, and has some reference value.
在建立了中国煤炭总产量的GM(1,1)灰色系统动态预测模型，通过检验，证明建立的模型是正确的，具有一定的参考价值。
The GM (1, 1) grey forecasting dynamic model about China's coal output, which is tested, is proved that the model is correct, and has some reference value.
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