“grading system of asphalt”的概念、定义、翻译、参考文献-科学参考

单词	grading system of asphalt
释义	grading system of asphalt 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	right association right associative element right associator right atrioventricular valve right atrium right balanced functor right balanced module right bimodule right bisector right brachiocephalic vein right bundle-branch block right cancellation right cancellation law right cancellative groupoid right cancellative semigroup right censored data right-censored data right chain ring right circular cone right circular cylinder right-circularly polarized light right closed martingale right coherent ring right comaximal elements right commom iliac vein

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。