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。
The threat-assessment pattern analyzed the threat level to network security through multi-sensor fusion technology with the result of early warning analysis.
威胁评估模块将预警分析的结果（攻击预测）作为输入，利用多属性融合技术定量分析网络安全威胁程度。
On the basis of error analysis of finite element modeling, the multi-level model updating is put forward for long-span Bridges.
在有限元模型误差来源分析的基础上，提出了大跨桥梁结构模型误差的分层次修正方法。
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