“生物层”概念、定义、翻译-科学时代

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

单词	生物层
释义	地质学词汇手册生物层 biostrome
随便看	PPC (pay-per-click) PPC (Pocket PC) PPC掌上电脑 PPD ppd. PPD ppd ppd # PostScript打印机描述文件 PPD--PPD (predicted percentage dissatisfied) ppd.--ppd. (prepaid) PPD--PPD (principle of professional development) PPD (predicted percentage dissatisfied) ppd. (prepaid) PPD (principle of professional development) PPE PPE (performance planning and evaluation) PPE (performance planning and evaluation) PPE (polyphenylene ether) PPE--PPE (performance planning and evaluation) PPE （Philosophy，Politics and Economics） PPF PPF PPF--PPF (production possibility frontier) PPF--PPF（photosynthetic photon flux） PPF (production possibility frontier)