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Dual-air-duct for aircraft wall, has outer air passage provided with air return pipe, sound insulation heat preservation layer, pipeline switch and covering part, and air supply pipe connected through branch pipe air return pipeline. 专利
申请日期: 2013-01-01, 公开日期: 2013-07-17
作者:  LIN Z SHEN R WANG S YIN J ZHANG T
收藏  |  浏览/下载:2/0  |  提交时间:2019/12/13
Porous ceramic material manufacture, e.g. for use in sound insulation material, involves mixing sugarcane filter mud and clay, ball milling, adding water to repeatedly knead, aging, molding, drying and sintering. 专利
申请日期: 2009-01-01, 公开日期: 2009-05-13
作者:  ZHANG Y GAO W WEI Q JIAO H
收藏  |  浏览/下载:4/0  |  提交时间:2019/12/24


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