bottom-hole sampling 井底取样

drill hole sampling 钻孔取样 ; 打眼取样法

down hole sampling 井底取样

bore-hole sampling 钻孔取样

sampling hole 测孔 ; 采样孔

gas sampling hole 气体取样孔 ; 气体采样口

hole bottom freezing sampling 孔底冷冻取样