“roof of coal seam”的概念、定义、翻译、参考文献-科学参考

单词	roof of coal seam
释义	roof of coal seam Encyclopedia 理学煤炭地质勘查释 roof of coal seam煤层顶板在正常顺序的含煤岩系剖面中，直接覆于煤层上面的岩石。
随便看	cosmogeny cosmogonal cosmogonal theory cosmogoner cosmogonic cosmogonical cosmogonid cosmogonist cosmogony cosmogony doctrines in ancient China cosmograd cosmographer cosmographic cosmographist cosmography cosmolabe cosmologic cosmological cosmological A-term cosmological constant cosmological dimming cosmological dipole cosmological distance cosmological distance scale cosmological effect

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。