density-dependent natural selection 密度制约性自然选择
density-independent natural selection 非密度制约性自然选择
density selection 密度选择
Density Selection Mechanism 浓度选择机制
Selection of laser pulse shape pulse duration flux density are discussed in pulsed laser microwelding and the experimental results are given.
讨论了脉冲激光微型焊接中，对于激光的脉冲形状、光脉冲宽度、光通量密度等的选择，并给出了实验结果。
In accordance with the liquid temperature selection in winter, current density, summer with the lower limit.
依液体温度选择电流密度，冬季用下限，夏季用上限。
In the paper, what is the typical sample of KNN is analyzed, and a method of samples selection based density is presented.
论文针对KNN这种常用的文本分类方法，分析了什么是它的典型样本，提出了一种基于密度的样本选择算法。
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