“pre-Hadean”的概念、定义、翻译、参考文献-科学参考

单词	pre-Hadean
释义	pre-Hadean Geology and Earth Sciences The earliest era of the Priscoan, covering the formation of the Earth and ending around 4550 Ma ago (Harland et al., 1989). The name is no longer used.
随便看	exchange rate exchange rate bands Exchange Rate Mechanism exchange rate overshooting exchange rate regime exchange restrictions exchange selection Exchequer excimer exciplex excircle excise excise duty excision repair excitation excitation temperature excitatory postsynaptic potential excited state exciton exclave excluded middle excluded middle, principle of exclusion Exclusion crisis exclusion, geographies of

科学参考收录了60776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。