This review summaries the application of ion exchangers in the separation and determination of alkali metals, alkali-earth metals, noble metals, rare earth elements and actinoid.

离子交换剂在萃取色谱中得到了广泛的应用，本文详细总结了离子交换剂在分析化学中用于碱金属、碱土金属、贵金属、稀土元素、锕系元素等的分离与测定。

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In this way, the preview to the more comprehensive review to the more down-to-earth, the more it can greatly enhance the quality of learning.

就这样，预习地越全面、复习地越扎实，越能大大提高学习的质量。

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Thomas Jordan, an Earth scientist at the University of Southern California, in Los Angeles, who chaired an international review of earthquake forecasting in Italy in the wake of L'Aquila's quake, says that these calculations must be put into context.

ECONOMIST: An extraordinary manslaughter trial starts in Italy