英语词汇“effective half angle of coverage”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	effective half angle of coverage
释义	effective half angle of coverage 有效照射半角[ 闪光装置反光器轴线与发光强度为轴向强度的二分之一值光束之间的夹角。(IXC)]
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