PDF(320 KB)
DEVELOPMENT OF YYGK一300 AND YYGK一200 HYDRAULIC DRILLS
Yu Mingchun
Mining and Metallurgical Engineering ›› 1996, Vol. 16 ›› Issue (1) : 8-12.
PDF(320 KB)
PDF(320 KB)
DEVELOPMENT OF YYGK一300 AND YYGK一200 HYDRAULIC DRILLS
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