英语词汇“ramsden circle”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	ramsden circle
释义	Ramsden circle Ramsden circle [′ramz·dən ‚sər·kəl] (optics) A sharp, bright circle of light which appears on a sheet of white paper held near the eyepiece of a telescope focused for infinity and pointed at a bright sky. Also known as Ramsden disk.
随便看	abisko national park abisl a-bis operations and maintenance abiss abist a+b is to a as a is to b a bit abit abital abitat a bit beyond her ken a bit beyond his ken a bit beyond ken a bit beyond my ken a bit beyond (one's) ken a bit beyond one's ken a bit beyond our ken a bit beyond your ken a bit bucket a bit-bucket a bitch of (something) a bit dicey a bit dodgy a bite abite

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Ramsden circle