<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>http://direct.ecency.com</link><image><url>http://direct.ecency.com/logo512.png</url><title>RSS Feed</title><link>http://direct.ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Wed, 08 Apr 2026 20:25:02 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/@dean-box/rss" rel="self" type="application/rss+xml"/><item><title><![CDATA[R134a制冷剂物性及应用现状]]></title><description><![CDATA[R-134a（1，1，1，2-四氟乙烷）是一种不含氯原子，对臭氧层不起破坏作用，具有良好的安全性能（不易燃、不爆炸、无毒、无刺激性、无腐蚀性）的制冷剂。R134a的毒性非常低，在空气中不可燃，安全类别为A1，是很安全的制冷剂。 分子式CH2FCF3 沸点（101.3kpa）/℃-26.1 临界温度/℃101.1 临界压力/ kpa4066.6 液体密度/ kg/m1188.1 饱和蒸气压（25℃）/]]></description><link>http://direct.ecency.com/cn/@dean-box/r134a</link><guid isPermaLink="true">http://direct.ecency.com/cn/@dean-box/r134a</guid><category><![CDATA[cn]]></category><dc:creator><![CDATA[dean-box]]></dc:creator><pubDate>Thu, 26 Dec 2019 06:09:00 GMT</pubDate><enclosure url="https://images.ecency.com/p/C3TZR1g81UNaPs7vzNXHueW5ZM76DSHWEY7onmfLxcK2iQWz7DD3RQ2CXH24G2TQcFHss6Th6i44YVe6m7Ryf5aMChxzjRk4Pv3VqnEjQzYLJTKL5e25Kt2?format=match&amp;mode=fit" length="0" type="false"/></item></channel></rss>