terra drill meaning in English

特拉型钻机

Many bore holes in shuangwangcheng reservoir which lies in the sedimentary area are drilled and lots of terra drill data are collected . five typical sections , i . e . section i ? i , ii ? i , iii ? ii , iv ? v ' and v ? v are drawn . the vertical sedimentary sequence of this sedimentary area is divided cbmbining the granularity features of sediments
课题组与山东省水利勘测设计院合作，对湖区内的双王城水库进行了钻探研究，搜集了大量的地质钻孔资料，经沉积物岩性特征分析，绘制出双王城水库外围1km处围绕水库的5个典型剖面(即剖面? ’ 、 ? ’ 、 ? ’ 、一’和? ’ )的剖面图，结合沉积物粒度特征，划分出该沉积区的垂向沉积序列。