1. By introducing safe-inserted-node and safe-deleted-node concept into the structure, the performance of tree creation is reenforced.
同时，给出了基于该结构的特征向量插入算法。
2. By introducing safe-inserted-node and safe-deleted-node concept into the structure, the performance of tree creation is reenforced. The algorithms are also given for the creation of ER-Tree. The empirical test results show that (1) the tree creation algorithm proposed is about 10 times faster than R*-Tree.
Rivest，Cleary以及 Arya和 Mount在假设点集为均匀分布的情况下分析了这类算法的平均复杂度为 O（2〕目前最好的静态索引结构和检索算法是 Arya和 Mountl`在Friedman，Bentley和Finkel等人工作的基础上提出来的。
3. During the past month, the junta has tighten security in the town and reenforced troops.
在过去一个月里，军政府已加强安全和增强军队。
4. It was also found that the neostigmine depressor effect was markedly reenforced by reserpinization.
同时，新斯的明的降压效应又能被利血平化所显著增强。