species variation meaning in Chinese
种属差异
Examples
- Except for plenty of ammonite fossiles , abundant coccotithophorid is also found but simple species variation . therefore , we put forward that black shale deposition , especially the oil shales may have the relationship with the bloom of coccotithophorid of palaeo - oceanographical phytoplankton
C n原于比与6 ’七toc曲线的变化趋势一致，说明5 ’七toc异常受到有机质组分变化的控制，即受陆源高等植物与海洋水生生物相对输人量的变化所控制。