“positive direction”的概念、定义、翻译、参考文献-科学参考

单词	positive direction
释义	positive direction Mathematics See directed line.
随便看	paradox paradoxes of relevance paradoxical combinator paradox of thrift paradox of voting DCT d.c. voltage DCVS DC-XA reusable launch vehicle D days(geomagnetic) DDC DDCMP DDD DDE DDL DDO classification DDO photometry DDoS DDP DDR memory DDS DDT de DEA deacetylation

科学参考收录了60776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。