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<ul class="navigation"><li class="prev"><a accesskey="p" class="prev" href="WSCFDA855F-B5B4-4316-AA0A-DFA4CC1DAC7D.html" title="关于矢量图形"><img src="images/blank.gif" alt="上一页" width="17" height="17" /></a></li><li class="next"><a accesskey="n" class="next" href="WSfd1234e1c4b69f30ea53e41001031ab64-73dba.html" title="颜色通道"><img src="images/blank.gif" alt="下一页" width="17" height="17" /></a></li></ul><div class="hierarchy"><a href="WSfd1234e1c4b69f30ea53e41001031ab64-794aa.html">打开和导入图像</a> /
     <a href="WSfd1234e1c4b69f30ea53e41001031ab64-7949a.html"><b>图像基础知识</b></a> 
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                    将矢量图形和位图图像组合
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                <div><p>在文档中组合矢量图形和位图图像时，必须记住图片在屏幕上的外观并不一定是其在最终媒体中的外观（无论是商业印刷、在桌面打印机上打印，还是在 Web 上查看）。以下因素将影响最终图稿的质量：</p>
<dl><dt class="dlterm">透明度</dt>
<dd>许多效果会向图稿添加半透明的像素。当图片包含透明效果时，Photoshop 将在打印或导出前执行一个称作<dfn class="term">拼合</dfn>的过程。在大多数情况下，默认拼合过程可达到出色的效果。但是，如果您的图片包含复杂、重叠的区域，并且需要进行高分辨率输出，您可能需要预览拼合的效果。</dd><p class="dlseparator"></p><dt class="dlterm">图像分辨率</dt>
<dd>位图图像中每英寸像素 (ppi) 数量。使用太低的分辨率来打印图像会导致<dfn class="term">像素化</dfn>，即输出结果上的像素大而粗糙。使用太高的分辨率（图像像素比输出设备可生成的像素小）将增大文件大小而不会提高印刷输出的质量，并将降低图片打印的速度。 </dd><p class="dlseparator"></p><dt class="dlterm">打印机分辨率与网频</dt>
<dd>半色调屏幕中每英寸产生的油墨点数量 (dpi) 和每英寸产生的线数量 (lpi)。图像分辨率、打印机分辨率和网频间的关系决定了打印图像的细节品质。</dd><p class="dlseparator"></p></dl>
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