“Ramsden circle”的概念、定义、翻译、参考文献-科学参考

单词	Ramsden circle
释义	Ramsden circle [`ramz·dǝn ´sǝr·kǝl] ^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	elliptic type elliptic wedge elliptocytosis ellsworthite elm Elmidae El Niño elongation elongation factor Elopidae Elopiformes elpasolite light-activated silicon controlled switch light adaptation light amplification by stimulated emission of radiation light amplifier light antiaircraft artillery light artillery light beacon light-beam galvanometer light-beam oscillograph light-beam pickup light blasting light bomber light bulb

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