Zirconium oxychloride , octa hydrate for industrial use 工业八水合二氯氧化锆
2.
Water quality - determination of tetra - to octa - chlorinated dioxins and furans - method using isotope dilution hrgc hrms 水质.三氯至八氯二氧杂环乙烯和呋喃的测定.同位素稀释hrgc hrms法
3.
It is a feasible way to manager spatial objects by utilizing relational database in the gis applications . we have brought to octa - tree index structure for managering spatial data efficiently in relational schema . by space filling curve , z - curve , we mapped rsdd to 1 - dimensional linear sp 为了在关系模式下有效地对空间数据进行处理，论文提出了八分树的索引结构，并利用空间填充z一曲线把rsdd空间映射到一维空间，从而建立起了空间对象的索引顺序。
