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		复合柔性结构全局模态函数提取与状态空间模型构建
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			EXTRACTION OF GLOBAL MODE FUNCTIONS AND CONSTRUCTION OF STATE SPACE MODEL FOR A COMPOSITE FLEXIBLE STRUCTURE
			 
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		 图8. 铰链${S}_{2}$的(a) 几何条件 (b) 自然条件  | 
	
Fig.8. (a) Geometric and (b) natural matching conditions at the joint${S}_{2}$  | 
	
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