“letters express item”的概念、定义、翻译、参考文献-科学参考

单词	letters express item
释义	letters express item Encyclopedia 工学快件释 letters express item信件类快件以封套形式缄封的，内件是按照名址递送给特定个人或者单位的信息载体的快件。不包括书籍、报纸、刊物等。
随便看	twistor equation twistor line twistor method twistor space twistor theory twist persistence length twist per unit length twist setting twist setting machine twist-spun knot twist theorem twist wave vector twitch Twitching TWM Two Acres of Land two aligned dramatic stages of the Guandi Temple in Nanzhuang Village, Dingxiang County two-anchored stow net fishing two- and four-stream approximation two-armed spiral pattern two arrows space two aspects two aspects of the nature of light two assurances and three guarantees two-banded perch

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。