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+0800</pubDate><guid>http://www.tongfamen.com/famen/hemei.html</guid><description><![CDATA[<p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;褐煤是煤化程度最低的煤种，煤化程度介于泥炭和烟煤之间，含水量高，在空气中易风化；含一定量的原生腐殖酸，碳含量低，氧含量高，氢含量变化大。由于褐煤水分高、热值低、易风化和自燃。可分为非蒸发脱水提质技术、成型提质技术、热解提质技术三大类。</p>]]></description><category>阀门技术知识</category><comments>http://www.tongfamen.com/famen/hemei.html#comment</comments><wfw:comment>http://www.tongfamen.com/</wfw:comment><wfw:commentRss>http://www.tongfamen.com/feed.asp?cmt=143</wfw:commentRss><trackback:ping>http://www.tongfamen.com/cmd.asp?act=tb&amp;id=143&amp;key=c7e85311</trackback:ping></item></channel></rss>
