The problem of collecting and delivery shunting of non-through wagon flow on the actinoid private line belongs to a kind of the combinatorial optimization problems.

放射形专用线非直达车流取送车问题属于合优化问题,影响因素较多。

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.

离子交换在萃取色谱中得到了广泛的应用，本总结了离子交换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。