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During his epoch-making exploration in China, von Richthofen~1 divided the Palaeozoic coal-bearing series in Shansi int......
Significance of Caucasian Sections for Working out Carbon-Isotope Standard for Upper Permian and Low
Data obtained on conodont distribution in the Permian-Triassic Sovetashen Section of Transcaucasia provide further limit......
目的 比较左旋布比卡因和罗哌卡因用于肌间沟臂丛神经阻滞的效果及不良反应。方法 本组自2007年5月～12月对60例行上肢手术患者，ASAI～......
采用群体累积培养方法,考察不同亚致死浓度水平的Zn2+、Cd2+和Zn2+-Cd2+在不同暴露时间下对萼花臂尾轮虫3 d种群增长率的影响。结......
