Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.
本文对巯基乙酸的合成工艺进行了比研究,认为硫氢化法硫代硫酸法生产成本低,适宜于矿用巯基乙酸的生产,而硫脲法可高浓度的巯基乙酸。
Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.
本文对巯基乙酸的合成工艺进行了比研究,认为硫氢化法硫代硫酸法生产成本低,适宜于矿用巯基乙酸的生产,而硫脲法可高浓度的巯基乙酸。
Three maceral groups,vitrinite,fusinite and exinite,seperated from Britain coal and their gasification kinetics in CO2 have been investigated by TGA at the pressure of 0.
对英国煤进行了显微组分的分离富集,了镜质组、丝质组稳定组三种富集物。
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