“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	machinery harvest machinery parameter design Machinery Pavilion of Paris World Expo machinery safety machinery status recognition machine scheduling problem machine spindle assembly machine-spoiled time machines, tools, equipment and work aids machine time machine to machine communication machine tool machine tool fixture machine tool stick-slip monitoring machine tool system integration assembly machine touch machine translation machine translation evaluation machine translation, MT machine translation periods machine translation post-editing machine translation quality estimation machine translation quality evaluation machine vision machine vision device

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。