英语词汇“class 4 laser product”的翻译、意思、用法、释义-英汉汉英双解词典-良福网

词汇	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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