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銆€銆€灏佽褰㈠紡锛歍O-220
銆€銆€绱嬫尝鎶戝埗姣旓細65dB锛堝吀鍨嬪€硷級
銆€銆€璨�(f霉)杓夎(di脿o)鏁寸巼锛�0.01%锛堝吀鍨嬪€硷級
銆€銆€绶氳矾瑾�(di脿o)鏁寸巼锛�0.01%锛堝吀鍨嬪€硷級

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