快3网站
<tr id='9YKa1J'><strong id='9YKa1J'></strong><small id='9YKa1J'></small><button id='9YKa1J'></button><li id='9YKa1J'><noscript id='9YKa1J'><big id='9YKa1J'></big><dt id='9YKa1J'></dt></noscript></li></tr><ol id='9YKa1J'><option id='9YKa1J'><table id='9YKa1J'><blockquote id='9YKa1J'><tbody id='9YKa1J'></tbody></blockquote></table></option></ol><u id='9YKa1J'></u><kbd id='9YKa1J'><kbd id='9YKa1J'></kbd></kbd>
观众可以用不同的音量对声控树发声，观察灯点亮的多寡。声音传感器将接收到的声音转换成电信号，再加以放︻大。然后分级处理，点亮相应的各级彩灯
