In connection with the study of chemical abundances, it is interesting to speculate on the chemical composition of the solar system at its formation . 同研究化学丰富度有关的一个有趣的问题,是推测太阳系在形成时的化学组成。
Species richness was generally low in all shrub communities 各类灌丛之间物种丰富度指数相差不大。
Application of steady state approximation and rate controlling step in chemical kinetics 鄂尔多斯地区不同生境类型对苔藓植物多样性和丰富度的影响
Species richness and diversity of moth communities in tianjin wetlands ; implications for environmental management 天津湿地蛾类丰富度和多样性及其环境评价
Characterization of ecological and gardening plant communities and their species abundance in baosteel in shanghai 上海宝钢生态园林植物群落类型及丰富度