The early instability theory still has some loose ends, however.How can cells with shifty chromosomes outcompete their stable counterparts? 不过，早期不稳定理论仍然还有一些未解决的问题，譬如具有善变染色体的细胞如何胜过其具有稳定染色体的对手？
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. 根据展开和收拢几何特性关系，对其刚度特性进行了分析，并依据弹性稳定理论，对该展开机构进行了局部和整体稳定性分析。
