是供地质部门进行岩心钻探使用的钢管，是一种具有中空截面、周边没有接缝的长条地质钻探用钢管。
该地质管经检验和使用，质量符合要求。
The tubes can meet the quality requirements by inspection and application.
但是在月球上，这些地质特征却往往是伴随着熔岩管(很久以前就已经出现在月球上了)崩塌而出现的。
But on the moon such geologic features usually occur following collapses of lava tubes, which formed long ago in the moon's history.
地质学家认同较深那一层含砷的风险低，不过，在开凿几百万个深管式井泵之前，这件事必须绝对确认。
Geologists agree that the risk of arsenic in deep aquifers is low, but before a few million such tube Wells are dug, they need to be absolutely sure.
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