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。
Based on these formulas, axi-symmetric problems in elasticity can be solved by the complex function technique. As an example, a spherical cavity in ar…
本文用这种方法求解了含有一个球形空腔的圆轴在两端受拉时的解答，表明了以此法分析求解空间轴对称问题的可能性。
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。
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