“沥青分级体系”的概念、定义、翻译、参考文献-科学参考

单词	沥青分级体系
释义	沥青分级体系 Encyclopedia 工学道路沥青释 grading system of asphalt沥青分级体系沥青作为一种化工产品，必须按照某个技术指标进行等级划分，以形成不同的标号，满足不同地区和工程的需要。
随便看	directed path directed plane directed point set directed quantity directed quasiorder directed relation graph directed segment directed self-assembly lithography technology directed sequencing directed set directed spanning tree directed strongly regular graph directed system directed technical change directed tetrahedron directed the security work of large-scale activities directed tree directed triple system directed union directed value directed web directed xy walk directed xy-walk direct effect direct effects hypothesis

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。