“Cretaceous Period”的概念、定义、翻译、参考文献-科学参考

单词	Cretaceous Period
释义	Cretaceous Period Encyclopedia 理学中生代释 Cretaceous Period白垩纪中生代最后一个纪（第三个纪）。约开始于1.37亿年前，结束于0.65亿年前。白垩纪形成的地层称白垩系（Cretaceous System）。
随便看	Radio Visibility radio war radio wave radiowave dielectric spectroscopy radio wave diffraction propagation over obstacles radio waveguide radio wavelength band radio wave penetration method radio wave propagation radio wave propagation during reentry radio wave propagation in the ionosphere radio wave propagation in tropospheric radio duct radio wave propagation via the sporadic E layer radio wave scattering of the solar corona radio waves propagation mechanism radio window radio wind radar radish radish seed radium radium-223 radium[223Ra]dichloride radium-226 radium-228 radium-beryllium neutron source

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。