... angular field 角视场 angular focusing 角聚焦 angular frequency 角频〔率〕 ...
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focusing angular 角聚焦
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In recent years, there have been many researches focusing on orbital angular momentum of light beam in the field of optics.
近年来,在光学领域内,关于光束轨道角动量的研究,受到广泛的关注。
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