“ancient.sunspot observation”的概念、定义、翻译、参考文献-科学参考

单词	ancient.sunspot observation
释义	ancient.sunspot observation Encyclopedia 理学太阳物理学释 ancient.sunspot observation太阳黑子的古代观测在望远镜发明以前直接用肉眼观察日面上的黑子现象。在一般情况下，由于太阳光十分刺眼，看到这种现象的机会不多。但在日出或日落时，或在大雾笼罩或风沙弥漫的天气，日光减弱，就有可能看到日面上的大黑子。
随便看	Central African-Chad Mission Central African Republic Central Africans Central Agricultural Experiment Institute central air-conditioning unit central algebra Central Amazon Conservation Complex Central American Bank for Economic Integration Central American Common Forces Central American Court of Justice Central American Defense Council Central American Democratic Community Central American Indian languages Central American Institute for Research and Industrial Technology Central American News Agency Central American Peace Conference in Washington of 1907 Central American Peace Conference in Washington of 1923 Central and Eastern Europe Central and Southern Liaoning urban agglomeration central angle central antihypertensive drugs central antitussives Central Archives of the Italy State central area of China Central Army

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