PDF(152 KB)
PERCUSSION-ROTATION OIL CIRCUIT CASCADE HYDRAULIC DRILL———A STUDY
Xiao Qingping
Mining and Metallurgical Engineering ›› 1997, Vol. 17 ›› Issue (4) : 6-9.
PDF(152 KB)
PDF(152 KB)
PERCUSSION-ROTATION OIL CIRCUIT CASCADE HYDRAULIC DRILL———A STUDY
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