... firstinfirstoutmethodofinventorycosting存货成本先进先出法 firstling初生物；初次收获；最初结果 firth三角港 ...
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研究二叠纪末一三叠纪初生物大绝灭事件具有重要作用；
The action must also have played an important role in the mass extinction during the Late Permian and early Triassic.
按照这种分析方法，更早的阶段仍然没有可信的分析方法。同样，基于普遍系统发生的生物是祖先种的支序种，而不是原初生物。
Older stages are not yet amenable to this type of analysis, and the organisms at the base of universal phylogenies are cladistically ancient species, not primitive unmodified microbes.
初生共生细菌的系统发育分析表明，B型是入侵生物型，而浙江非B型是本地生物型。
Phylogenetic analysis of primary endosymbionts based on 16S rDNA indicates that the non-B biotype is native to China while the B biotype is an invasive biotype.
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