In this paper,the integer N = pkq is called a <k,1>-integer,if p and q are odd primes with almost the same size and k is......

在离子晶体结构的教学中,常常涉及点阵理论、最紧密堆积理论及其与晶体结构的关系。本文对上述的理论基本概念进行了深入讨论。......