boring-core 钻孔岩心 ; 孔岩心

Boring-core ĥ 钻孔岩心

core boring 取心钻进 ; 取心钻探

core boring method 取心钻探法

Rock core boring 取石心钻

Core boring machine 岩心钻探机

Machine core boring 岩心钻探机

diamond core boring bit 金刚石空心钻头 ; 金刚石套料钻

core boring test 钻芯检测

core boring sampling 钻芯取样