Its structure and working process were described. Its applications in hydro-metallurgy of rare earths were reviewed too.
介绍了它的结构和工作过程，综述了它在稀土湿法冶金中的应用。
It has been demonstrated that the photoacoustic spectroscopy is suitable for the study of fine structure, forbidden transition and ultra analysis of rare earths.
表明光声光谱分析方法对于稀土元素的光谱精细结构、禁戒跃迁研究及其分析测定是一种重要的手段。
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