PDF(174 KB)
Research and development for pneumatic portable drill rig HYQ-15A
Huang Yufeng,An Yongwu,Li Lingyu , Zhang Xiangqian
Equipment for Geophysical Prospecting ›› 2015, Vol. 25 ›› Issue (6) : 360-363.
PDF(174 KB)
PDF(174 KB)
Research and development for pneumatic portable drill rig HYQ-15A
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