Calcium belongs to mixed-crystal impurity and must be removed in advance.
钙属于混晶型杂质，必须预先分离。
The ground state energies of a shallow donor impurity near a sharp surface of a semi-infinite crystal are studied.
本文用变分法计算了半无限晶体近表面内浅态施主杂质的基态能量。
The growing solution of DKDP crystal was synthesized firstly, then the source and possible introducing method of impurities were discussed by the measurement of metal ion impurity concentrations.
首先合成了DKDP晶体生长溶液，测定了合成溶液中部分杂质金属离子的含量，讨论了晶体生长溶液中杂质的可能来源和引入途径。
应用推荐