
Study on influence of layout of DTH bits junk slot on hole-bottom flow field
Huang Zhiqiang,Zhou Yi,Shan Daiwei,Yang Maojun,Liu Shaobin , Bu Yan.
Equipment for Geophysical Prospecting ›› 2008, Vol. 18 ›› Issue (5) : 296-299.
Study on influence of layout of DTH bits junk slot on hole-bottom flow field
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