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Oil / petroleum
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球 标
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全球地层标准
geostratigraphic standards
地球化学标准
geochemical criterion
地球化学标记
geochemical signature
天球坐标
celestial coordinates
标定球
spherical displacer
游标控制球
track ball
球一孔标定装置
ball-bore calibration device
球形浮标
spherical buoy
球极坐标
spherical polar coordinates
球面坐标
spherical coordinates
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