“景县封氏墓群”的概念、定义、翻译、参考文献-科学参考

单词	景县封氏墓群
释义	景县封氏墓群 Encyclopedia 历史学景县封氏墓群释 Mural Tombs of Feng Clan of Jing County景县封氏墓群中国北魏以来渤海蓨县（今河北景县南）封氏的家族墓地。又名封家坟，俗称十八乱冢。
随便看	closed solution closed space closed sphere closed star closed string closed subalgebra closed subbase closed subcomplex closed subfield closed subgroup closed submanifold closed subscheme closed subset closed subspace closed substructure closed subsystem closed subvariety closed surface closed surface integral closed syllable closed system closed system of elements closed system of functions closed system of hot water supply closed term

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。