“night visual range”的概念、定义、翻译、参考文献-科学参考

单词	night visual range
释义	night visual range [`nīt `vizh·ǝ·wǝl `rānj] ^OPTICS The greatest distance at which a point source of light of a given candlepower can be perceived at night by an observer under given atmospheric conditions. Also known as nighttime visual range; penetration range; transmission range.
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