“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	time-numerical time of arrival positioning time of coincidence time of dead tide time of detachment [X time of exposure time of fertilizer application time of flight time-of-flight time of flight counter time of flight detector time-of-flight detector time of flight diffraction time-of-flight-diffraction ultrasonic test instrument time of flight mass spectrometer time-of-flight mass spectrometer time of flight mass spectrometer (TOFMS) time-of-flight mass spectrometer (TOFMS) time-of-flight method time-of-flight separator time-of-flight separator of isotopes time-of-flight spectrometer time of flight technique time of flight (TOF) time-of-flight, TOF

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。