2) 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。
4) noise and vibration control
噪声与振动控制
1.
The key to noise and vibration control is how to identify the sources of noise and vibration can only if the sources of noise of vibration are found, the noise and vibration can be controlled effectively.
噪声与振动控制关键的就是对噪声与振动源的识别分析。
5) rail wheel noise and control
轮轨噪声与控制
6) limits prediction and control
极限预报与控制
1.
Post-wrinkle criteria and its limits prediction and control on sheet metal deep-drawing;
板料拉深后皱曲判据及其极限预报与控制
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