“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	Home of Mao Dun home of Mao Zedong Home of Pu Songling Home of Qi Baishi home of Qiu Jin Home of Qiu Jun Home of Ren Bishi Home of Rice and Fish in the North home of Sun Yat-sen Home of Tan Sitong Home of the Gentry Home of Wang Guowei Home of Wang Jiaxiang Home of Wei Yuan Home of Xiangjingyu Home of Xu Xiake and Qingshantang Stone Inscriptions Home of Zhang Wentian home of Zhou Enlai home of Zhu De homeoid homeomorph homeomorphic homeomorphically irreducible tree homeomorphic equivalence homeomorphic graph

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。