المؤلفون: DOU Xuqian

المصدر: Meikuang Anquan, Vol 51, Iss 5, Pp 126-129 (2020)

مصطلحات موضوعية: through beds hole, hard rock drilling, high strength pdc bit rotary drilling, rotary-percussion drilling, Mining engineering. Metallurgy, TN1-997

وصف الملف: electronic resource

Relation: https://www.mkaqzz.com/cn/article/id/6818; https://doaj.org/toc/1003-496X

URL الوصول: https://doaj.org/article/8cadcac6d37d46b18513dc73c012d99e

المؤلفون: YU Hongqing, GUO Yanfei, LI Xuechen, WANG Liangjin

المصدر: Meikuang Anquan, Vol 51, Iss 10, Pp 78-81, 86 (2020)

مصطلحات موضوعية: gas extraction, three-modernization and one-project, fine management, through beds hole, blowout preventer, Mining engineering. Metallurgy, TN1-997

وصف الملف: electronic resource

Relation: https://www.mkaqzz.com/cn/article/id/7195; https://doaj.org/toc/1003-496X

URL الوصول: https://doaj.org/article/8b6daecf1c5d43aab3ce727578771f04