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d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(1)\"><em></em>下载文档(未登录)机械鼠标的基本介绍描述：机械鼠标主要由滚球、辊柱和光栅信号传感器组成。鼠标通过 ps/2 口或串口与主机相连。接口中一般使用四根线，分别是电源 ，地，时钟和数据。这里给大家分享一些关于机械鼠标的基本介绍，希望对大家能有所帮助。机械鼠标的工作原理当你拖动鼠标时，带</a>';
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