If the underground eluvium is thick enough, the hard portion of it can be used as support layer of stake ends.
而厚度较大的地下残积土坚硬部
可作为桩端持力层。
If the underground eluvium is thick enough, the hard portion of it can be used as support layer of stake ends.
而厚度较大的地下残积土坚硬部可作为桩端持力层。
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