The crushed stone cement base is a semi-rigidsurface structure adopted widely at present.
碎石基层是目前被广泛采用的半刚性路面结构。
2
Earth's surface consists of rigid plates that are constantly shifting and jostling one another.
地球表面由不断移动和相互碰撞的刚性板块组成。
3
Taking rigid disk surface as an example, fractal parameters are obtained by means of power spectrum and structure function, providing a proper geometric model for further contact analysis.