“Free and Imperial Cities”的概念、定义、翻译、参考文献-科学参考

单词	Free and Imperial Cities
释义	Free and Imperial Cities Encyclopedia 历史学德意志历史释 Free and Imperial Cities帝国自由市神圣罗马帝国时期直属于皇帝（亦即德意志国王）的城市和市镇，根源于皇帝领地。
随便看	electro-optical jamming materials electrooptical modulation electro-optical modulator electro-optical Q-switched technology electro-optical telemeter electro-optical tracking system electro optic coefficient electro-optic coefficient electro-optic constant electro-optic crystal electro optic deflection electro-optic deflection electro optic effect electro-optic effect electro-optic effect of liquid crystal electro optic effect waveguide device electro-optic effect waveguide device electro-optic materials electro optic modulation electro-optic modulation electrooptic radar calibration technique electro optics electro-optics electro-optic sampling electro-optic spectrograph

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。