waidianzi:
同意楼上所说,就是一个振荡电路!与下图原理一致哈..愿讨论,QQ:602637303 [图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/55/1848201185366098.bmp');}"onmousewheel="returnimgzoom(this);">