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Recycling chromium compounds from waste biomass by hydrothermal reduction and detoxification of chromium residue, by adding chromium-containing mineral to replacement solution, filtering and calcining solid insoluble substance. 专利
申请日期: 2018-01-01, 公开日期: 2018-02-27
作者:  MA W MENG F GUO L LIU Z CHEN Z WANG
收藏  |  浏览/下载:2/0  |  提交时间:2019/12/02
Germanium doped gaas devices 专利
专利号: GB1479154A, 申请日期: 1977-07-06, 公开日期: 1977-07-06
作者:  -
收藏  |  浏览/下载:8/0  |  提交时间:2019/12/24


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