Based on the U-series dating of intercalated speleothem formations, the chronology of several hominid sites in southern China has been studied.
本文对采自云南呈贡龙潭山1号广西土博咁前晚期智人遗址的动物化石次生碳酸岩样进行了铀系年。
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Today's tests still work by measuring HCG. But, throughout the 20th century, other methods were explored; the AZ Pregnancy Reaction Test popped up in 1928 and was the first of several " bioassays" or animal-based tests.
今天的测试仍然通过测量 HCG 起作用。 但是,在整个 20 世,探了法;AZ 妊娠反应测试于 1928 年出现, 是多项“生物测定” 或基于动物的测试中的第一项。