The tremendous heat causes rapid expansion of a spherical cavity, which in turn generates seismic waves.
巨大的热量造成球形腔体的剧烈膨胀，并产生各种震动波。
And then a theory on the penetrating depth, the number of impact and the relation between penetrating resistance and depth was obtained by means of dynamic spherical cavity expansion.
应用动态球腔扩张理论，建立了冲击贯入方程、冲击次数表达式和贯入阻力与贯入深度的关系。
应用推荐