“Devonian Period”的概念、定义、翻译、参考文献-科学参考

单词	Devonian Period
释义	Devonian Period Encyclopedia 理学古生代释 Devonian Period泥盆纪古生代的第四个纪，在志留纪之后，石炭纪之前。约开始于4.19亿年前，结束于3.59亿年前，持续时间约0.6亿年。泥盆纪时期形成的地层称泥盆系(Devonian System)。
随便看	emission sources emission spectrographic analysis emission-spectroscopical emission spectroscopy emission spectrum emission standard for industrial enterprises noise at boundary emission standard for ocmmunity noise emission standard of air pollutants for fossil-fired power plant emission standard of environment noise for boundary of construction site emission standards and measurement methods of railway noise on the boundary alongside railway line emission standards for stationary sources emission trading scheme emission trading system emission value emission variable emissive emissive heat emissive power emissivity emissivity calibration emissivity measurement Emissivity Measurement by Measuring Eimissions emit emitron emittance

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