The element associations and their spatialtemporaldistribution are discussed based on synthetic analyses of multiple geological and geochemical information.
本文以多种地质、地球化学信息为基础，讨论该矿元素组合及其时空分布。
2
Based on comparative analysis on spatialtemporaldistribution characteristics of soil nutrients of typical dam land in Beigou small watershed of Yan 'an City.
通过对延安市北沟小流域典型坝地土壤养分的测定，分析比较了其土壤养分时空分布特征。
3
Earthquake has a spatial and temporaldistribution of.