For the complete specification of the stress in a body it is necessary to know the stress components at each point of it. 對於物體內應力的完全說明,則必須要知道物體內每一點上的分應力。
The stress components form a symmetric array. 應力分量構成了一個對稱的數組。
A positive-stress component means tension. 正應力分量表示拉力。