“density secondary standard device”的概念、定义、翻译、参考文献-科学参考

单词	density secondary standard device
释义	density secondary standard device Encyclopedia 工学密度计量技术释 density secondary standard device密度副基准装置用于传递密度量值的主要计量器具。
随便看	subinterval subinvariant subinvariant measure subinvariant series subinvariant subgroup subinvariant subgroup series subirrigation/infiltration irrigation Subito-documents from libraries Subject subject subject analysis subject assessment of audio quality Subject Authority Database of National Library of China subject-based learning website subject bibliography subject catalog subject classification subject classification system subject database subject dictionary subject empire Subject Exams subject first effect Subject Headings for Engineering subject headings language

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。