B生物医药大词典by MedSci
例句 /

PIERCER ROLL DESIGN FOR ROLLINGφmm TUBE ONφ00AUTOMATIC MILL

PIERCER ROLL DESIGN FOR ROLLINGφmm TUBE ONφ00AUTOMATIC MILL

在φ00机组上轧制φmm钢管时穿孔机的辊型设计