“通达系”的概念、定义、翻译、参考文献-科学参考

单词	通达系
释义	通达系 Encyclopedia 工学〔邮政快递运营商〕释 Tong Da Express通达系申通快递、圆通快递、中通快递和韵达快递四家快递企业的统称。又称“三通一达”快递。
随便看	contrast factor contrast-induced nephropathy，CIN contrast induced nephro-toxicity，CIN contrastive contrastive analysis hypothesis contrastive focus contrastive stress contrast of fringes contrast of photographic plate contrast photometer contrast polyphony contrast rendition contrast resolution contrast reversal contrast test contravalency contravariance contravariant contravariant component contravariant coordinate contravariant density contravariant derivative contravariant functor contravariant Hom functor contravariant index

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。