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。
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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