“Barlow lens”的概念、定义、翻译、参考文献-科学参考

单词	Barlow lens
释义	Barlow lens [`bär´lō ´lenz] ^OPTICS A lens with one plane surface and one concave surface that is placed between the objective and eyepiece of a telescope to decrease the convergence of the beam from the objective and thereby increase the effective focal length.
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