“叠层石”的概念、定义、翻译、参考文献-科学参考

单词	叠层石
释义	叠层石 Encyclopedia 理学微体古生物学释 stromatolites叠层石由营光合作用的原核生物（蓝藻和细菌）所建造的一种生物沉积结构，是前寒武纪未变质的碳酸盐沉积中最常见的一种“准化石”。
随便看	principal axis transformation principal-axis transformation principal band principal base principal bending moment principal block principal branch principal bronchus principal bundle principal bundle connection principal category principal cell principal character principal circle principal class principal coefficient of contraction principal cohomology class principal coincidence curve principal component principal component analysis principal component analysis and singular value decomposition principal component analysis (PCA) principal component analysis, PCA principal component analysis,PCA principal component clustering

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。