hat
PDC coring moso se yon sèl kalite fòme nan vant yo ak dan divès moso, ki ka pran sant. Li kesyon sa te poze ki itilize nan eksplorasyon géologique, min chabon, dlo conservation ak hydraulique, konstriksyon wout la, chemen, pon ak kay
eng
PDC coring bit is one kind of tube-shaped and multi-tooth bit, which can get core. It is mainly used in geological exploration, coal mining, water conservancy and hydropower, construction of road, railway, bridge and building