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		三种典型轴向运动结构的振动特性对比 1)
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			COMPARISON OF VIBRATION CHARACTERISTICS OF THREE TYPICAL AXIALLY MOVING STRUCTURES 1)
			 
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		 图6. 板频率$\omega_{n2}$和$\omega_{n3}$随长宽比的变化  | 
	
Fig. 6. The frequencies of the plate $\omega_{n2}$ and $\omega_{n3}$ vary with the aspect ratios  | 
	
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