The influence of jet position on rock chips formed ahead of bit was analyzed.
并对射流位置与刀具前方岩石碎块形成的关系进行了分析。
Experiment shows the rock breaking efficiency of jet flow impact pressure is enhanced.
实验表明，提高了射流冲击压力的破碎岩石效率。
Experiment shows the rock breaking efficiency of jet flow impact pressure is enhanced.
实验表明，提高了射流冲击压力的破碎岩石效率。
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