英语词汇“upper roll”的读音、翻译、释义、用法及例句-开邑网

词汇	upper roll
释义	upper rollupper roll1.■上辊
随便看	coal sample mixing coal sample number coal sample preparation coal sample reduction coal sampling coal-sand dual media filter coal scale coal scatter coal science coal screen coal screening coal screenings coal scuttle coal seam coal seam boundary coal seam correlation coal seam dip angle coal seam floor contour map coal seam gas coal seam gas-bearing capacity coal-seam gas-pressure coal seam group coal seam infusion coal seam liable to dust explosion coal seam methane content

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