基床表层 surface layer of subgrade bed ; bottom layer of subgrade ; formation top layer ; formation base layer 路基基床 Subgrade bed ; Bed of rail base 基床约束...
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... Base Layer 3 基本第3层 formation base layer 基床表层 Base Layer Bitstream 影像资料压缩成基本比特流 ...
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... top slot layer 槽线圈上层 formation top layer 基床表层 top layer yeast 上面酵母层 ...
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和常规铁路相比，高速铁路对基床表层功能的要求更加严格。
The functional requirements on surface layer of foundation bed for high-speed rail-ways are rather more strict than for ordinary railways.
利用二布一膜的隔水防渗特性，铺设在路基基床表层，改良路基填料。
A kind of complex geomembrane was laid in the upper layer of the roadbed to prevent water penetration, therefore the lower classed soil could be used as fill of embankment.
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