“four fractions”的概念、定义、翻译、参考文献-科学参考

单词	four fractions
释义	four fractions Encyclopedia 工学原油评价释 four fractions四组分重质油品中饱和烃、芳香烃、胶质和沥青质四个族组分。其含量用质量分数表示。
随便看	relative retention time relative retention value relative reverberation level relative Rf value relative risk relative risk aversion relative risk function relative risk model relative risk reduction, RRR relative root system Relatives relative scalar relative scale relative sea-level change relative sensitivity coefficient relative set relative singular homology group Relatives of Emperor relatives of the legal relationship relative spectral response scaling relative sphere relative stability relative standard deviation relative status incentives relative sunspot number

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。