The geometrical similarity law in cross section was satisfied for the aluminum extruded tubes with a double hollow section.
具有双孔截面的铝合金挤压管的断面形状满足几何相似定律。
The stability of external pressure vessel mainly depends on crust's geometrical cross-section including diameter, length and wall thickness. Among them, the length and diameter are crucial.
外压设备的抗失稳能力(稳定性)主要取决于壳体的几何尺寸，即直径、长度和壁厚，其中长度和直径起着决定性作用。
The cross-section design according to the invention allows the geometrical moment of inertia to be substantially increased as compared to conventional cross-section designs.
相比于通常的横截面，采用这种横截面设计 可以明显提高平面惯性矩。
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