By distinguishing the high density and crowd, this paper argues that it should be careful to use high-den.

通过辨识高密度与拥挤的关系，建议我国城市已有建成区采用高密度建设要慎重。

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The results showed that Den. membranaceus has better physical properties than that of Den. yunnanicus, such as higher density, lower tangential and longitudinal dry shrinkage.

实验结果表明，黄竹的物理性能，如纵横干缩性等优于龙竹，而且黄竹的力学性能如静曲强度、静曲弹性模量及顺纹压缩与剪切强度也比龙竹高。

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