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Drilling
containing
地表
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English
世界标准地质年代表
standard global geochronologic scale
世界标准地质年代表
standard global chronostratigraphic scale
地层和井内金属落物对钻柱表面的切割伤痕
downhole notching by formation and junk cuts
地表
surface
地表
循环
surface circulation
地表
的
superficial
地质年代表
stratigraphic scale
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