扬声器是把电信号转换成声信号的一种装置如图所示是扬声器构造示意图.当线圈中通过变化电流时线圈受到 力作用从而带动与线圈相连的纸盆 于是 Template




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tomski扬声器是把电信号转换成声信号的一种装置如图所示是扬声器构造示意图.当线圈中通过变化电流时线圈受到 力作用从而带动与线圈相连的纸盆 于是 coloring