According to the characteristics of spatial index of grids and R-tree, a hybrid structure of spatial multilevel index is presented based on grid and R-tree.
结合网格索引和R树索引的特点，提出了一种基于网格与R树的多级混合索引。
A rectangular region of geography is roughly partitioned in several times to multilevel sub-regions, in which spatial index of R-tree has been constructed.
该方案首先将矩形地理空间进行租网格划分建立多级网格索引，然后针对每个小网格建立基于R树的空间索引。
Advanced multilevel deep linking system which not only lets you have unlimited number of pages, but also enables search engines to easily index the pages.
先进的多级深连接系统，不但让你有无限数量的页面，又可以使搜索引擎容易指数的页。
This paper proposes not only index of multilevel fingerprint database that is built by fingerprint pattern, ridge count and FingerCode based on Gabor filter but also a search method of it.
文章提出使用指纹纹形、脊线数目和基于Gabor滤波的指纹特征———指纹码构建多级索引指纹数据库和在此基础上检索多级指纹数据库的方法。
METHODS: to adopt the multifactor and multilevel uniform design to optimize the preparation prescription, disintegrating time as the assessment index.
方法：采用均匀设计试验法，以片剂崩解时限为指标，筛选灯盏花素口腔崩解片的最佳处方。
METHODS: to adopt the multifactor and multilevel uniform design to optimize the preparation prescription, disintegrating time as the assessment index.
方法：采用均匀设计试验法，以片剂崩解时限为指标，筛选灯盏花素口腔崩解片的最佳处方。
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