| 摘要 |
<p>The construction part (50) has a honeycomb or grating structure made of formable structure that is composed of structural elements in form of rib-shaped portions. A ratio of volume of the elements to volume of a covering layer (51) is greater than 0.6. The structure is constructed such that 50mm long mutually orthogonal tracks are formed in 50mm by 50mm major surface portion of the construction part. Moment of inertia is determined at 1mm area normal to a cut surface along one track. A highest ratio of the volume of the elements to the volume of the covering layer is lesser than 3mm 4>.</p> |
