没有必要认为密度制约因素具有任何特殊的重要性。
There is no need to regard density-dependent factors as having any special importance.
主要影响因素是非密度制约因素，但密度制约因素亦有一定影响。
The main effect factors of the quantity change of rodent were "nondensity dependent factor" and the density dependent factors had some effect also.
还有密度制约的生物因素，诸如病害、捕食和种内竞争等。
There are as well as density-dependent biological factors such as disease, predation, and intraspecific competition .
而氧化膜的生长和性能要受到槽液温度、持续氧化时间、合金成分、电流密度、硫酸浓度等多种因素的制约。
The growth and property of oxidized film are restricted by various factors such as tank liquor temperature, sustained oxidation time, alloy composition, current density and sulphuric acid density.
多孔铝膜的膜参数(孔径、孔密度、孔的纵横比和膜厚)和孔排布的规律性受到诸多因素的影响和制约。
The parameters of porous Alumina membrane, such as aperture, hole density and aspect ratio, membrane thickness, had been effected by many factors mentioned above.
但是，现在显得很清楚的是，所有种群都受“种群密度相关”和“种群密度无关”两类因素在不同程度上的共同制约。
But it now seems clear that all populations are regulated by a mixture of density-dependent and density-independent effects in varying proportions.
但是，现在显得很清楚的是，所有种群都受“种群密度相关”和“种群密度无关”两类因素在不同程度上的共同制约。
But it now seems clear that all populations are regulated by a mixture of density-dependent and density-independent effects in varying proportions.
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