subgrade stiffness
... subgrade reaction 路基反力 subgrade stiffness 路基刚度 subgrader 路基平整机 ...
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土体刚度仪是一种路基压实质量检测新仪器，介绍了土体刚度仪的构造和原理。
The organization and principle of geogauge who is new measurement instrument for compacted quality of roadbed are introduced.
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