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1·It is well known that bed porosities are greater near the bounding surface.

众所周知，靠近边界表面的床层自由空间率较大。

2·The bounding surface masonry model is developed and verified using test data.

建立了结构性粘土的边界面砌块体模型，并用试验进行了验证。

3·Further the coupling interaction of failure and slide is studied for calcareous sand. The interaction is described by damage model and bounding surface model, respectively.

然后考虑钙质土的颗粒破碎与滑移两种变形机制的耦合作用，并分别采用损伤模型和边界面模型予以描述。

4·Let's say that I gave you this curve bounding this surface.

给你这个曲面和这个曲线作为它的边。