Study on Controlling Coal Spontaneous Combustion at Semi-progressive Working Face by Macromolecular Mixed Soluble Expansive Colloidal Material是什么意思_Study on Controlling Coal Spontaneous Combustion at Semi-progressive Working Face by Macromolecular Mixed Soluble Expansive Colloidal Material在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句