1) noise prediction
噪声预报
1.
At the same time,the support of design theory and data for estimating warship s acoustical performance and developing low noise propeller can be obtained from the noise prediction The predicting method of radial noise of propeller including the trial study and theory method was introduced in this paper.
本文通过对螺旋桨噪声预报文献的归纳整理,把螺旋桨噪声的预报方法分成试验研究和理论预报两种方式分别进行介绍,并对今后螺旋桨噪声预报方法的研究方向提出了一定的看法。
2.
The noise prediction mechanism using Lighthill’s Acoustic Analogy was deduced in detail.
构造了声模拟理论和CFD方法相结合的算法;详细推导了Lighthill声模拟理论噪声预报的原理;用Reynold平均法采用k-ε模型对水下自由射流场进行数值模拟,并以此作为近场声源;随后,运用Lighthill声模拟理论对远场噪声进行预估,并分析自由射流场声辐射机理。
3) noise exposure forecast
噪声暴露预报
4) prediction of radiation noise
辐射噪声预报
5) telegraph noise
电报噪声<声>
6) noise prediction
噪声预测
1.
Applications of improved GM (1,1) model for city noise prediction;
改进GM(1,1)模型在城市环境噪声预测中的应用
2.
The reliability,applicability and existing problems of railway noise prediction method of German Schall 03 were demonstrated by theoretic deduction and analysis on the method.
通过对德国标准Schall 03铁路噪声预测方法的理论推导和分析,论证了预测计算方法的可靠性、适用性和存在的问题。
3.
A simple way of traction calculation in noise prediction was also presented.
在铁路噪声预测中 ,确定列车在起动、制动和正常行驶等过程中的运行速度是一较重要的技术环节。
补充资料：短期天气预报(见天气预报和天气图预报)
短期天气预报(见天气预报和天气图预报)
u。。，，，:‘，anq，yubao短期天气预报见关匀布绍升，二，二一一
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条