The crew attaches new lengths of pipe one by one from the top until the "drill string" is long enough to hit the seafloor.
船员们从这根钢管的顶部，一根一根地装上更多管道，直到这根“钻柱”足够长，能碰到海底。
The crew attaches new lengths of pipe one by one from the top until the “drill string” is long enough to hit the seafloor.
船员们从这根钢管的顶部，一根一根地装上更多管道，直到这根“钻柱”足够长，能碰到海底。
The standard pipe rack configuration for this drill consists of a long pipe cradle that is fastened to a pair of parallelogram- type swing arms.
本钻机的标准管架配置由一个长管道托架组成，该托架被固定在两个平行四边形的旋臂上。
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