For the complete specification of the stress in a body it is necessary to know the stress components at each point of it. 对于物体内应力的完全说明,则必须要知道物体内每一点上的分应力。
The stress components form a symmetric array. 应力分量构成了一个对称的数组。
A positive-stress component means tension. 正应力分量表示拉力。