“second”的概念、定义、翻译、参考文献-科学参考

单词	second
释义	second Encyclopedia 工学〔SI基本单位〕释 second秒国际单位制（SI）中的时间单位。符号s。当铯频率ΔνCs，也就是铯-133原子不受干扰的基态超精细跃迁频率，以单位Hz即s-1表示时，将其固定数值取为9192631770来定义秒。 Physics second①秒 ②第二 Mathematics second第二的；其次；秒 Astronomy second秒
随便看	ground atom ground-based astronomy ground based augmentation system ground-based augmentation systems Ground-based Boxing ground-based integrated observation system Ground-based interceptor ground-based manned experimental system of bioregenerative life support system ground-based measure method for spacecraft microvibration environment ground-based midcourse defense system ground-based observation ground-based observatory ground-based remote sensing of atmosphere ground-based telescope ground bearing capacity ground beetle Ground buried line system ground calcium carbonate ground check on airborne geophysical anomaly ground check on airborne magnetical anomaly ground clause ground configuration ground cosmic rays enhancement ground coupled heat pump ground covered structure/ Earth sheltered structure

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。