求翻译：为探究异育银鲫和黄颡鱼养殖水体水质因子变动规律和水产养殖对水体富营养化的影响，选取异育银鲫和黄颡鱼标准养殖池塘各一个，在2011年5月至2012年4月一周年内每月15日取样，对比分析两个养殖池塘内水质变化是什么意思？

For exploring the different carp and yellow catfish aquaculture water quality factor changes in the law and aquaculture on eutrophication, select a different carp and yellow catfish standard breeding ponds, in May 2011 to 2012 the week of April during the year on the 15th of each month sampling, com

Ability to explore education and prized silver open water fish farming laws and changes in water quality factors on water aquaculture of eutrophication, prized silver pick different education and open standard fish aquaculture ponds in the May 2011 to April 2012 one-year anniversary on the 15th of e

In order to inquire into different nurtures the silver crucian carp and Huang Sangyu breeds the water body water quality factor change rule and the aquaculture to the water body eutrophication influence, selects different nurtures the silver crucian carp and Huang Sangyu the standard breeds pond eac

For inquiry of allogynogenetic silver crucian carp and fluctuation of pelteobagrus fulvidraco in aquaculture water quality factors and the impact of aquaculture on water eutrophication, selection of allogynogenetic silver crucian carp and pelteobagrus fulvidraco in standard culture ponds, from May 2

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