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document.write('    	<td height="18" bgcolor="#EDECE9">·[023-62572665] 发表评论于 2015/5/18 17:10:22</td>');
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document.write('    	<td style="line-height:24px;font-size:14px;">&nbsp;我须要将输入电压14v，降为输出12v，输出功率40W，你能帮我设计吗？<Br></td>');
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