substratum

substratum

[ˈsʌbstrɑ:təm]

n.底层，下层;

复数： substrata

例句:

1、

Assessment of Soft Underlying Substratum of Geotechnical Engineering Works

软弱下卧层地基评价的几个问题

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2、

Calculating Method Alternation for Substratum Settlement of Cement-Soil Mixing Piles Composite Ground

水泥搅拌桩地基下卧层沉降计算方法选择

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3、

Approaching on the Space of Construction Sedimentation Surveying Research on Checking Method for Soft Substratum

建筑物沉降时间间隔软弱下卧层的验算方法探讨

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