amorphous substance是什么意思

用法例句

The results of XRD showed that the iron red crystal seed was brown yellow α-FeOOH or brown red noncrystalline substance.

X -射线衍射测定结果表明 ,硫酸盐湿法铁红的晶种为棕黄色的α -FeOOH或棕红色的非晶态物质。