�）的阅读距离下一个参考像素是0.26毫米，而在3.5米的阅读距离下一个参考像素是1.3毫米
</p>

<div class="figure">
<p><img src="images/pixel1.png" alt="Showing that pixels must become
larger if the viewing distance increases"><SPAN class="dlink">&nbsp;&nbsp;&nbsp;<A name="img-pixel1" href="images/longdesc/pixel1-desc.html" title="Long description for the illustration of a pixel's definition">[D]</A></SPAN></p>
</div>

<p>第二幅图描述了设备分辨率对像素单位的影�