... loudspeaker 扩音器扬声器 low band standard 低带标准 low bandgap material 窄带隙材料 ...
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low w band standard 低带标准
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This is no small thing; the standard for Wi-Fi was developed on unlicensed spectrum that had been considered "junk band", cluttered with low-intensity signals from microwave ovens and baby monitors.
这不是一件小事；短距离无线保真频率是无牌普，曾经被认为是“垃圾频率”，短距离无线通讯充满了从微波炉和婴儿监视器里收集到杂乱的低强度信号。
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