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化学气相渗入
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化学气相渗入
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工学
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chemical vapor infiltration
化学气相渗入
将具有特定形状的预制体置于沉积炉中,通入的气态前驱体通过扩散、对流等方式进入预制体内部,在一定温度下发生复杂的化学反应,生成固态的陶瓷类物质并以涂层的形式沉积于增强相表面或孔隙中,随着沉积的继续进行,孔隙越来越小,最终成为连续相,即陶瓷基体的方法。
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National Nature Reserve for Wetland in Jiuduansha,Shanghai
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National Nature Reserve in Beilun Esturay, Guangxi
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National Nature Reserve in Nanji Islands, Zhejiang
National Nature Reserve in Neilingding Island-Futian,Guangdong
National Nature Reserve in Tongguling, Hainan
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National Negro Convention
National News Agency
National Newspaper of Radio, Film and television Excellent Manuscript selection
National New Technology Telescope
National Northwest Library
National Northwest Union University
National Nuclear Laboratory
National Nuclear Safety Administration
national nutrition week
National Observatory of Athens
national occupational health standard
national occupational health standards
national occupational health supervision and management system
National Oceanic and Atmospheric Administration
National Oceanic and Atmospheric Administration(US)
National Oceanic Resource Management Authority
National Oceanic Survey
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