由于刚体不可变形，这些相对位移只能通过土体的法向和切向变位来实现。
Under loads, a rigid body and the surrounding soil will change relatively their positions normal to or tangent to the faces of the rigid body.
由于刚体不可变形，这些相对位移只能通过土体的法向和切向变位来实现。
Under loads, a rigid body and the surrounding soil will change relatively their positions normal to or tangent to the faces of the rigid body.
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