soluble gully development
...溶沟发育；处理方法。 Abstract: This paper mainly introduces the karst area of pier fou [gap=285]Key words: expanded foundation; soluble gully development; treatment method ..
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soluble gully development
可溶性沟壑发育
以上为机器翻译结果，长、整句建议使用 人工翻译 。