PDF(2305 KB)
Fatigue strength analysis of drill bitefor down hole hammer
Ma Yu,Chen Xianzhan , Wang Yongfang.
Equipment for Geophysical Prospecting ›› 2019, Vol. 29 ›› Issue (4) : 234-238.
PDF(2305 KB)
PDF(2305 KB)
Fatigue strength analysis of drill bitefor down hole hammer
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