Reverse Circulation Technique with Down-hole Hammer Used in Water Well Drilling

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doi:10.3969/j.issn.1672-7428.2003.z1.082

2003 No. z1

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Reverse Circulation Technique with Down-hole Hammer Used in Water Well Drilling[J]. DRILLING ENGINEERING, 2003, (z1): 236-240. doi: 10.3969/j.issn.1672-7428.2003.z1.082

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Reverse Circulation Technique with Down-hole Hammer Used in Water Well Drilling[J]. DRILLING ENGINEERING, 2003, (z1): 236-240. doi: 10.3969/j.issn.1672-7428.2003.z1.082