“post card”的概念、定义、翻译、参考文献-科学参考

单词	post card
释义	post card Encyclopedia 文学【声像印制】释 post card明信片一种书写兼视觉媒介，其信息传播主要通过邮政网络，是邮政传信时代典型的社会交往方式。
随便看	negative perfect correlation negative permeability materials negative permittivity materials negative phototropism negative plate negative platemaking negative Poisson's ratio material negative polarity items negative polarity machining negative polynomial distribution negative-positive photographic system negative pressure negative pressure injection negative pressure method for deposit negative-pressure pulverizer with intermediate storage bunker negative pressure region negative pressure suction appliance negative priming effect negative probability negative proposition negative punishment negative quadratic differential negative real axis negative real number negative recurrent state

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。