“蓟县群”的概念、定义、翻译、参考文献-科学参考

单词	蓟县群
释义	蓟县群 Encyclopedia 理学蓟县群释 Jixian Group蓟县群华北燕山地区长城群和南口群之上、青白口群之下的以页岩和白云岩为主的中元古代地层。
随便看	optical bistable device optical bleaching optical bleaching agent optical bleaching agent; fluorescent whitening agent optical branch optical breakdown optical brightness optical buffer optical burst optical burst switching，OBS optical cable optical camera optical camouflage optical cavity optical celestial navigation optical cement optical center optical ceramics optical chaos optical characteristics measurement optical character reader optical character reader, OCR optical character reader,OCR optical character recognition optical Chinese character recognition

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。