The term "efficiency" refers to the ability of a speaker system to convert electrical energy (power from the amplifier) into acoustic output.
术语“效率”是指扬声器系统将电能（功放的推力）转化为声音输出的能力。
Built-in Hi-Fi high-quality and high-efficiency speaker monomer, you can still hear heavenly music even outdoors.
高音质高效率喇叭单体，即使在户外使用依旧可聆听到令人激赏的乐声；
Built-in Hi-Fi high-quality and high-efficiency speaker monomer, you can still hear heavenly music even outdoors.
高音质高效率喇叭单体，即使在户外使用依旧可聆听到令人激赏的乐声；
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