“Ramsden eyepiece”的概念、定义、翻译、参考文献-科学参考

单词	Ramsden eyepiece
释义	Ramsden eyepiece [`ramz·dǝn `ī´pēs] ^OPTICS An eyepiece consisting of two planoconvex lenses with their plane sides facing outward, having the same power and focal length, and separated by a distance equal to their common focal length.
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