Terms containing bottom hole coverage

Subject	English	Chinese
dril.	bottom hole coverage	钻头齿圈对井底覆盖程度
oil	bottom hole coverage	对井底覆盖程度
dril.	bottom hole coverage	钻头与井底接触面积
dril.	bottom hole coverage rate	钻头齿圈对井底的覆盖率
dril.	bottom-hole coverage	井底覆盖
tech.	bottom-hole coverage	钻头与孔底接触面积
oil	bottom-hole coverage coefficient	井底遮盖系数
oil	bottom-hole coverage rate	井底遮盖系数