“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	nonhamiltonian graph nonharmonic series nonharmonic tone nonharmonic wave non-Hausdorff space non-heating oil gathering process non-hierarchical notation nonhierarchical planner nonhistone protein non histone proteins non-histone proteins nonhistone proteins non Hodgkin lymphoma non-holomorphic non-holomorphic mapping non-holomorphic modular form non-holonomic non-holonomic condition non holonomic constraint non-holonomic constraint nonholonomic constraint nonholonomic constraint, anholonomic constraint nonholonomic constraint systems non-holonomic coordinate non-holonomic dynamical system

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。