“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	west longitude Westminster Westminster Abbey Westminster Statute West Mountains of Guiping Scenic and Historic Area West Nile fever West Nile virus West of the Tracks Weston Naef Weston scale Weston speed westphalian system west point West Sayan Mountains West Side National Park West Side Story West Taiwan Strait urban agglomeration West Texas Intermediate（Crude Oil） West-to-East Gas Pipeline System West-to-East Natural Gas Transmission Project West to East Water Transfer Project in Egypt west to east water transfer project in Pakistan West Virginia State Westward Festival of Xibe nationality Westward Ho/Ho!/ Hoe

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。