extendible hash

Therefore, we make an exhaustive research on traditional extendible Hash, and successfully structure a two-layer Hash model, which supports dynamic ADT dictionary, by combining the traditional Hash and the improved version.
于是，我们对传统的可扩展Hash作了深入的研究，找到了对它进行改进的窍门，然后把改进版本与通常的Hash成功地构成一个两层Hash架构，支持动态ADT字典。