“natural bitumen”的概念、定义、翻译、参考文献-科学参考

单词	natural bitumen
释义	natural bitumen Encyclopedia 工学天然沥青释 natural bitumen天然沥青特殊地质结构中的石油，在自然条件下经历千百万年时间，在温度、压力等外环境综合作用下氧化聚合而成的沥青类物质。通常为固体或者黏稠状。
随便看	associativity of addition associativity of multiplication associativity relation associator assortative mating assortment Assos Agora assosymmetric ring as spun fiber as-spun fiber ASS theorem Assuan assumed assumed coordinate system assumed interest rate assumed light source assumed mean assumed median assumed mode method assumed profile assumption assumption-based planning assumption formula assumption of enforcement consult assumption of plane cross-section

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。