Natural rock joint surface profiles belong to fractal category.

自然岩石节理表面轮廓线可以看作为分形曲线.

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Flood water resulted from break of natural rock - fill dam threatens the safety of downstream seriously.

天然堆石坝溃决洪水,严重威胁下游的安全.

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Abstract: Flood water resulted from break of natural rock - fill dam threatens the safety of downstream seriously.

文摘: 天然堆石坝溃决洪水,严重威胁下游的安全.

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The so - called " immortals, it is very good, □ natural rock ridge of You. "

即所谓 “ 时靓神仙之事, □然岩岭之幽 ”.

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