The oxygen and carbon isotopic samples are collated at two per mm along the mill finish down the growth axis, and tested at an interval of four samples, get 624 pairs of isotopic data altogether.
在沿石笋生长中轴切开的光面上，按每毫米2个样点进行取样，隔样检测氧、碳同位素，共获取624组同位素数据。
The oxygen and carbon isotopic samples are collated at two per mm along the mill finish down the growth axis, and tested at an interval of four samples, get 624 pairs of isotopic data altogether.
在沿石笋生长中轴切开的光面上，按每毫米2个样点进行取样，隔样检测氧、碳同位素，共获取624组同位素数据。
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