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		任意斜裂纹转子的耦合振动研究 1)
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			STUDY ON COUPLED VIBRATIONS OF ROTOR WITH AN ARBITRARY SLANT CRACK 1)
			 
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		 图3. 方位角($\theta_{2})$对包含任意斜裂纹的转子单元的变刚度特性影响  | 
	
Fig. 3. The influence of oriented angle ($\theta_{2})$ on stiffness variation of the rotor element including an arbitrary slant crack  | 
	
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