应用稳健主成分分析研究欧亚大陆早侏罗世植物区系划分尚属首次试验。
This is the first time to use the Robust principal component analysis method in studying the early Jurassic floristic division of Eurasia continent.
根据区域边界内的植物数量，北极地区可以划分成三个植物区系(分别是高北极，低北极和次北极)。
The Arctic region is broken into three floristic zones (High, Low and Sub Arctic), referring to the amount of plant life that exists within the regions' boundaries.
本文介绍了应用数值分析的某些方法和原理进行植物区系基本成分统计、地理成分划分及其分区。
This paper introduces some methods and principles of the numerical analysis that has been used for the statistics of basic elements, division of geographical elements and regionalization of flora.
研究区三叠系可划分出3个沉积等时面、4个沉积体系和10个沉积类型。
In the study, area, the Triassic systems can be divided into 3 sedimentary isochronic planes, 4 depositional systems and 10 sedimentary facies.
研究区三叠系可划分出3个沉积等时面、4个沉积体系和10个沉积类型。
In the study, area, the Triassic systems can be divided into 3 sedimentary isochronic planes, 4 depositional systems and 10 sedimentary facies.
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