英语词汇“gray filter”的翻译、意思、用法、释义-英汉汉英词典

单词	gray filter
释义	gray filter =neutral-density filter 以上来源于：《21世纪大英汉词典》 gray filter灰(色)滤光器gray filter灰[色]滤光器gray filter灰（色）濾光器電機工程gray filter灰(色)濾光器電力工程
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