centrifugal multi-level impeller blower
centrifugal multi-level impeller blower
离心多级叶轮鼓风机
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The vibrating spectrum analysis was done to centrifugal multi-level impeller blower, and found that the impeller has dynamic unbalance, so that the vibration of blower is to exceed the standard.
对离心式多级叶轮风机进行振动频谱分析，认为叶轮存在动不平衡，造成风机振动超标。
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