水流和养殖密度对史氏鲟的生长有着显著的影响。
The growth performances were significantly affected by water current and stocking density.
本产品用一台电动机带动叶轮同时增氧，提高养殖密度。
It increases oxygen simultaneously by using an electric motor to drive the impeller and raises the breeding density.
定义每公顷玉米种植面积上所饲养的奶牛数量称为养殖密度。
The number of cows per hectare corn farmers is called as breeding density.
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