“抽象符号”的概念、定义、翻译、参考文献-科学参考

单词	抽象符号
释义	抽象符号 Encyclopedia 工学地图符号释 abstract symbol抽象符号图形构成与所指制图对象的形状无联系的地图符号。
随便看	signed directed graph method signed distance signed graph signed measure signed measure space signed-minor signed number signed rank signed rank statistic signed rank test signed tree signed value signed volume signer sign function sign graph significance significance arithmetic significance level significance point significance probability significance test significant significant bit significant construction project of scenic and historic areas

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。