“邮政牵引车”的概念、定义、翻译、参考文献-科学参考

单词	邮政牵引车
释义	邮政牵引车 Encyclopedia 工学〔邮政快递技术装备〕释 post towing tractor邮政牵引车装有牵引连接装置，用于牵引载有邮件的专用工业机动车辆。为邮件运输、传送、搬运提供牵引动力。
随便看	principal normal surface principal normal vector principal number principal nutation principal object principal offender principal of land laws principal of least dissipation of energy principal open set principal optical axis principal orbit principal orbit type principal order principal order module principal parabola principal parameter principal part principal partition principal part of an infinitesimal principal plane principal plane of crystal principal plane of photograph principal plane pattern principal planet principal point

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。