Earthquake is the rupture prdess of rock In large scale under the appliedshear stress.
地震是在剪应力作用下发生的岩石大规模破裂过程。
2
The ratio of the magnitude of an appliedshear stress to the velocity gradient that it produces; that is, a measure of a noncrystalline material's resistance to permanent deformation.
剪切应力数值与其产生应变速率的比值叫粘性，用来衡量非晶材料抵抗永久变形的能力。
3
Precise time integration method is applied in short-leg shear wall, and a new scheme is put forward which is referred as Newmark-precision time history method.