... gray induration ==> 灰色硬结 gray infiltration ==> 灰色浸润 gray iron ==> 灰口铁,灰口铸铁,灰铸铁 ...
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A gray dynamic model is put forward to the infiltration quantity tendency in the Xichuan catchment was predicted by a gray dynamic model, GM (1, 1).
在此基础上，采用GM(1,1)灰色动态模型预测西川河流域降雨入渗量随水土流失治理度的变化趋势。
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