“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	imporosity imporous import importance importance measure importance measures importance of a flare importance of solar flare importance sampling importance sampling method importance value import and export import and export flow measurement import and export food inspection import and export licensing system for agricultural products import and export of Chinese books and periodicals import and export of goods import and export of services import and export price index import and export quotas for agricultural products Important Archival Documents 1978–2008 Important Arts for the People's Walfare important bird and biodiversity areas：IBA Important Canon on Judicial Cases of the Three Reigns Important City News Inspection Method

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。