About 25,000 years ago, they by the Bering Strait in Alaska Island landing 堆积密度 » Density of the pile 我抱住你 » I grasp you ..
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High density dislocation pile-up lies in the interface of the matrix and the second phase, which induces the sub-structure fining of the matrix.
在基体与析出相的界面上存在高密度位错堆积，从而引起基体金属亚结构细化。
Model tests of large driven pile jacked into sands were conducted to obtain the soil density changes due to the compaction.
通过砂土中的大型沉桩模型试验，得出了桩周土体相对密度的变化规律。
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