Excavations to form the basement were 7m lower than the original ground level.
挖掘成的地下室比原来的地平面低7米。
Together with the improved soil a composite ground is formed, and the components and structure of the original -ground have been changed.
还可与被改良土层一起形成复合地基，改变原地基土的成分和结构。
Together with the improved soil a composite ground is formed, and the components and structure of the original -ground have been changed.
还可与被改良土层一起形成复合地基，改变原地基土的成分和结构。
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