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document.write('    	<td height="18" bgcolor="#EDECE9">·[m18123362652] 发表评论于 2019/5/15 14:44:10</td>');
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document.write('    	<td style="line-height:24px;font-size:14px;">&nbsp;从理论和实际制作均不可能实现，可用81.920k的频率，在3脚直接得到50Hz的信号</td>');
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