“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	artificial reefs made of tailings artificial reefs organism artificial reproduction for salmon or trout artificial respiration artificial restoration artificial retina artificial river artificial rubber latex artificial rule artificial rumen artificial satellite artificial scheelite artificial seed artificial selection Artificial Skin artificial skin artificial slope artificial source geoelectric field artificial star artificial stock market artificial stone artificial suede artificial system artificial tendon artificial tetraloid oyster

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。