RATIONAL STRUCTURE OF A STEPPED DIAMOND BIT AND ITS ROCK CUTTING PROCESS
Cai jinglun, Xu Guoxian
Editorial office of ACTA PETROLEI SINICA . 1991, (2): 97 -106 .  DOI: 10.7623/syxb199102012

Copyright © 2021 Editorial Office of ACTA PETROLEI SINICA

Address:No. 6 Liupukang Street, Xicheng District, Beijing, P.R.China, 100724

Tel: 86-010-62067128, 86-010-62067137, 86-010-62067139

Fax: 86-10-62067130

Email: syxb@cnpc.com.cn

Support byBeijing Magtech Co.ltd, E-mail:support@magtech.com.cn