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Bridge and tunnel connected anti-falling stone buffer structure, has transparent arch roof whose outer and inner parts is paved with fly ash and clay water filling layer that are adhered on top surface of concrete prefabricate block. 专利
申请日期: 2015-01-01, 公开日期: 2015-07-01
作者:  GUO X ZHANG Z ZHU C WANG Z
收藏  |  浏览/下载:6/0  |  提交时间:2019/12/09
Preparation of methane-enriched gas involves heating carbonaceous raw material and gasification agent in solid catalyst carrier, decomposing, performing gasification, adding semi-coke and fly ash, and carrying out methanation reaction. 专利
申请日期: 2015-01-01, 公开日期: 2015-04-08
作者:  WANG G XU S WANG C XIAO Y
收藏  |  浏览/下载:2/0  |  提交时间:2019/12/09


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