山区公路路基常常采用土石混合料填筑而成。
In the mountain area, the subgrade is usually filling by soil-rock mixtures.
在山区高速公路建设中。路堤多采用土石混合料填筑。
For the highway construction in mountain region, the embankment is usually filled with soil-rock mixture.
用数理统计的方法对土石混合料综合毛体积密度的选取作一简要介绍，并结合实际提出路基施工中应注意的问题。
The paper mainly introduced the choice of comprehensive bulk density for earthworks mixture, and combined with the practice proposed some relative problems.
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