“beam expander”的概念、定义、翻译、参考文献-科学参考

单词	beam expander
释义	beam expander [`bēm ik´span·dǝr] ^OPTICS A combination of optical elements used to increase the diameter of a laser beam or other light beam.
随便看	antitussive antitwilight arch antivenin antivernalization antiviral agent antivitamin anti-voice-operated transmission antixerophthalmic vitamin antler antlerite Antlia Ao horizon A-O-I gate Aoo horizon AOQL aorta aortic aneurysm aortic arch aortic body aortic incompetence aortic paraganglion aortic stenosis aortic valve aortitis aortography

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