本文将单点杂质引入到不可共度势一维体系中，用格林函数方法推导了杂质状态的能级和波函数。
We study the effect of a single impurity in a one dimensional system with incommensurate lattice potential.
本文着重介绍了包钢白云鄂博矿主要杂质元素的赋存状态，包钢现行选矿工艺的降杂效果，并作了简要讨论。
The paper mainly introduces and discusses the existing state of main inclusions element in Baiyun ore, and the inclusions decrease result of the existing ore dressing process at Baotou Steel.
分析了材料杂质、空气中的氧、间歇放电过程、集流体状态等引起电池自放电的表观现象和产生的原因；
The apparent phenomena and causes of self - discharge resulted from impurities of materials, oxygen in air, intermittent discharge process and collector state were analyzed;
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