Experimental results show that this improved scheme can preserve topological relationship very well, but the distribution density of the input data can not be reflected quite well.

实验结果表明，这种改进方案可以很好地保持拓扑关系，但输入数据的分布密度却不能得到较好的体现。

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Watch winders can also preserve the movement by ensuring the even distribution of lubricants and reducing crown wear and tear by minimizing the need for resetting.

FORBES: D?ttling Revolutionizes the Watch Winder

Salt, used to preserve food, which meant that it could be stored and traded, was an early aid to distribution.

ECONOMIST: Make it cheaper, and cheaper | The