“平常信函”的概念、定义、翻译、参考文献-科学参考

单词	平常信函
释义	平常信函 Encyclopedia 工学信函释 ordinary letter平常信函信函的一种常见形式。邮政企业在收寄时不出具收据，处理时不登记，投递时不要求收件人签收，不接受用户查询。简称平信。
随便看	line blocking factor line breadth line-breadth line broadening line broadening by rotation line broadening by turbulence line bundle line-by-line scanning line carving monument of the Central Mountain Temple in Dengfeng City line carvings of Zaju Opera and music and dance performances in the Erxian Temple in Limen Village, Gaoping City line center line charge line chart line-chromatic number line-circle intersection line clipping line-colored line complex line congruence line congruence theory line conic line connectivity line contour line coordinate line coordinates

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。