Φ159mm热轧无缝钢管厂穿孔机顶杆脱出装置的设计
Φ159mm열알무봉강관엄천공궤정간탈출장치적설계
Design of Mandrel Ejection Device in the Piercing Mill for Φ159 mm Hotrolled Seamless Pipe Plant
저자의 최근 논문