“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	integrated logistics support review of aircraft materiel integrated logistics support test of aviation products integrated magnitude integrated management of caries integrated management of medical institutions integrated management of municipal solid wastes Integrated management of project all elements Integrated Management of Project Goal Elements integrated management of records integrated management of rural health services integrated management of small watershed integrated management of water basins integrated management of watershed water resources integrated management of weeds integrated management on community security integrated management platform of museum technical protetion integrated management structure design integrated management structure design of management system integrated management system of production, process and marketing of aquatic products integrated management system of production, supply and marketing of aquatic products integrated manufacturing system Integrated Map of the Great Ming Integrated Marine Biosphere Research Integrated Marketing Communication integrated marketing communication

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