The stiffness analysis was investigated with the geometric relations of deployment and stowage.And the local and whole stability analyses were also studied with stability theory. 根據展開(kāi)和收攏幾何特性關(guān)系,對其剛度特性進(jìn)行了分析,并依據彈性穩定理論,對該展開(kāi)機構進(jìn)行了局部和整體穩定性分析。
The fractal dimension is one of the geometric characteristics of microcellular structure of foamed PP and exhibits the foamability of PP under a certain foaming condition. 分形維數是發(fā)泡聚丙烯微孔結構的幾何特性之一,體現了聚丙烯在特定條件下的發(fā)泡能力。