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单词	Airy disk
释义	Airy disk noun : the bright central spot in the system of diffraction rings formed by an optical system with light from a point source (as a star) Word History Etymology after George Biddell Airy †1892 English mathematician and astronomer First Known Use 1923, in the meaning defined above
随便看	portunusses portwatcheres portwatchers porty porule porulose porulous porus poruses porwiggles porwigle pory Porz am Rhein Porzana porzanae porzanas pos pos de bottes pos de rien pos men posable posada posadas posaune posaunen

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。