By using of effective mobility power flow method, vibration level and radiated power level of a element cylindrical shell are studied.
5．利用有效导纳功率流法研究了基本圆柱壳体的表面振级和声辐射功率级。
参考来源 - 圆柱壳组合系统振动噪声的有效导纳功率流法研究The seat vibration level is important for evaluating of the machinery quality in Research and Development(R&D) of the low noise machine.
在低噪声机械设备的研制和验收过程中,机械设备的机脚振动级是一项重要的评价指标。
参考来源 - 弹性支撑对机械设备机脚振动级的影响研究So fuzzy vibration level can be obtained. Another method is that use average acceleration power spectrum to predict.
另外一种方法是通过用平均加速度功率谱来求楼层的振级。
参考来源 - 预测列车对拟建建筑物的振动影响·2,447,543篇论文数据，部分数据来源于NoteExpress
They will rescue only those people who have sufficient vibration level.
他们将援救那些只有充分振动水平的人。
The noise and vibration level is an important index for evaluation of bearing quality.
中小型球轴承噪声水平是评定轴承质量的一个重要指标。
The noise level of turbogenerator can be effectively controlled after its vibration level is reduced.
通过对汽轮发电机组进行减振改进后，机组的噪声都得到有效的控制。
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