“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	symbolism symbolism of clothing symbolism, school of symbolist aesthetics symbolization symbolization control table Symbolize symbol learning theory symbol manipulation language symbol map symbol media symbol module symbol O symbol o symbol of a binary composition symbol of a differential equation symbol of a differential operator symbol of an elliptic complex symbol of an equation symbol of an integral operator symbol of an operation symbol of an operator symbol of a pseudodifferential operator symbol of a unary operation symbol of a vector field

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。