Different copper levels had significant effect on color, shape and water content of manure.

并且不同铜水平日粮对猪的粪便颜色、形状、含水量等产生了明显的影响。

youdao

Different copper levels had significant effect on color, shape and water content of manure.

并且不同铜水平日粮对猪的粪便颜色、形状、含水量等产生了明显的影响。

youdao