theart.那；这；这些；那些adv.（用于比较级前）更加；用于最高级前；(用于形容词、副词比较级前)越 ... 越 ...The Cash Boyn.《送款员》；贺拉旭·阿尔杰(Horatio Alger)著

1. The beam has a constant flexural rigidity.
   该梁具有常数弯曲刚度。
2. This kind of alloy has great rigidity.
   这种合金材料的刚度极大。