防止马匹在地上挖地基，有助于保持地板的水平。
Prevents horses from digging at the floor and helps to keep the floor level.
不同浅层地基处理法下PHC管桩水平承载性状对比尚缺乏研究。
The behavior of PHC pipe piles under lateral load is lack of research now.
不同浅层地基处理法下PHC管桩水平承载性状对比尚缺乏研究。
The behavior of PHC pipe piles under lateral load is lack of research now.
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