应力张量总是在不断变化的,但是基于随体坐标来看,不论观察者是站着看躺着看还是从四面八方看,应力不变.对于同一个张量,它可以向不同
回答: 建立在被考察物体系统质心上的参照系就不是惯性参照系。必须将被考察物体系统扩大,将产生静磁场的物体也包括进来,使得被考察物体系统之
由 marketreflections
于 2011-03-25 14:08:24
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