英语词汇“class 4 laser product”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	class 4 laser product
释义	class 4 laser product 四类激光产品[ 允许人体接近超过三 B 类可接受发射极限(AEL)激光辐射的激光产品。]
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