..._百度空间 ... geographic standardization地理标准化 geographic survey地理测量 geographic value地理坐标值 ...
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通过测量一束头发上较重的氢和氧同位素的比例,科学家可以构建一个地理时间轴。
By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
科学家称这种标志物为“替代品”,代表他们真正想要测量的东西——在本例中,即在过去冰的地理范围。
Scientists call such markers "proxies" for the thing they actually want to measure — in this case, the geographic extent of the ice in the past.
参考国家地理月球测量结果。
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