“Permian coal measures”的概念、定义、翻译、参考文献-科学参考

单词	Permian coal measures
释义	Permian coal measures Encyclopedia 理学二叠纪煤系释 Permian coal measures二叠纪煤系在二叠纪时期连续沉积形成的一套含有煤层并具有成因联系的沉积岩系。又称含二叠纪煤岩系、二叠纪含煤建造、二叠纪含煤地层等。
随便看	fixed coordinate fixed coupling fixed crane fixed cross section chart fixed cross section survey fixed crushing station fixed cycle fixed decimal point fixed degree fixed delay fixed disaster-prevention green space fixed dummy block extrusion fixed effect fixed-effect model fixed electrode fixed element fixed-ended beam fixed endpoint fixed endpoint variational problem fixed error fixed face fixed factor fixed field fixed-field accelerator fixed-field alternating gradient accelerator

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。