英语词汇“Gregorian telescope”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	Gregorian telescope
释义	Word Frequency Gregorian telescope noun a form of reflecting astronomical telescope with a concave ellipsoidal secondary mirror and the eyepiece set behind the centre of the parabolic primary mirror Word origin C18: named after J. Gregory (died 1675), Scottish mathematician who invented it
随便看	firepan firepink fireplace fireplug firepot fire power firepower fire power fire practice fire prevention fireproof fireproof dish fireproof door firer fire raiser fire raising fire regulations fire-retardant fire retardant fire risk fireroom fire sale firescape firescaping firescreen

英语词典包含233703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。