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	preliminary marksmanship instruction preliminary marksmanship training preliminary materials review preliminary mediation review committee preliminary message security protocol preliminary movement schedule preliminary natural resource survey preliminary non-advocate review preliminary notice of disciplinary action preliminary notice of violation preliminary notification preliminary occurrence report preliminary official statement preliminary operating and maintenance manual preliminary operational capability preliminary operational concept preliminary operation safety analysis preliminary path caching preliminary plan approval preliminary planning authorization preliminary preferred parts list preliminary product information preliminary/professional qualification test preliminary project approval preliminary project design description

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Ramsden circle