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| 2023, Vol. 26(1): 40-46 DOI: | ||
| Tooth arrangement design of retractable DTH hammer bit used for drilling while casing | ||
| ZHANG Boyao, CHEN Baoyi* , YANG Da, BO Kun and CAO Pinlu | ||
| College of Construction Engineering, Jilin University, Changchun 130061, China | ||
| Received null Revised null | ||
| Supporting info | ||
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