求翻译：所以地下水以及地理位置重力是影响重金属污染物传播的主要因素。由上一问对城区内各区域进行主成分分析可得，各种金属之间具有较强的相关性，所以各重金属污染源中，一些相关重金属在传播中也保有一定的相似性，特别是在污染源，相关性较强的几种重金属，其密度肯定都会比较大。因此只要对整个城区内的各重金属含量进行主成分分析，确定其主成分种各重金属元素的载荷,再对该主成分因子进行插值拟合，得到该主成分因子的空间分布，由此来确定污染源。是什么意思？

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That is why groundwater as well as geographical location gravity is a heavy metal pollutants affecting major contribution to the spread. Within the city, asked by a regional analysis ingredient available, all kinds of metal between the relevance of the stronger, there is a need for the heavy metal p

So gravity groundwater as well as the geographic location is the main factor influencing the spread of heavy metal pollutants. By asking on principal component analyses of various areas within the city, has a strong correlation between the various metal, so the heavy metal pollution, some heavy meta