GFA glass flake may be added to increase film build and lower moisture vapor permeability.

可添加GFA玻璃鳞片以提高成膜性及降低水气的通透性.

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Methods: Determine the content of trace elements sueh as Cu , Zn, Fe, Mn , Ca, Mg, etc in gastric fluid by atomic absorption spectroscopy ( AAS ) methed.

方法: 采用原子吸收分光光度计,GFA-4B石墨 炉原子化器,无火焰原子吸收光谱法测定胃液中Cu, Fe, Mn, Ca, Mg等元素的含量.

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