Experimental research on surface-radiated noise of turbo-charged diesel engine at different altitudes;
不同海拔下涡轮增压柴油机表面辐射噪声试验研究
Study on underwater target radiated noise modulated information extraction method;
水中目标辐射噪声调制信息提取方法研究
Study on the non-linearity of the underwater radiated noise;
舰船水下辐射噪声非线性特性研究
Numerical analysis of noise radiation from refrigerator compressor shell;
冰箱压缩机壳体噪声辐射数值分析
Numerical analysis of noise radiation from motorcycle engine shell
摩托车发动机壳体噪声辐射数值分析
Some methods which can reduce the noise radiation of shell effectively were given out.
压缩机的噪声辐射是通过壳体的振动辐射出去,为了降低压缩机的噪声,并进一步优化壳体的声学特性,利用数值模拟方法,在合理简化模型的基础上,进行了壳体模态分析。
On classification of underwater vibrating object sound radiation level based on RBF neural network;
基于径向基神经网络的水下振动物体辐射噪声级别分类研究
This paper presents a study on the relationship between vibration and sound radiation from submerged cylindrical shell.
通过对两个加筋圆柱壳结构的振动与辐射噪声关系的数值分析,讨论了结构测点加速度与辐射噪声之间的相互关系,结果表明结构测点加速度与辐射声功率和辐射声压之间并非单调关系。
The sound power level and spectrum of sound radiation of centrifugal compressor,type DHP40-4,are analyzed by artificial neural network,and the max.
采用人工神经网络技术分析了DHP40 -4型离心式压缩机辐射噪声声功率级及其噪声频谱分布规律 ,应用模拟退火算法对压缩机噪声最大值进行了预测 ,结果表明该型压缩机噪声最大值在 2 0 0 0Hz附
Numerical simulation of dynamic response and radiation noise of gearbox
齿轮箱动态响应及辐射噪声数值仿真
Line spectrum provide significant distinct information in radiation noise of underwater target.
线谱是水中目标辐射噪声中重要的特征信息,在被动声呐系统中,线谱提取是水中目标识别的关键技术。
With the classical Johnson noise, 1/f noise and radiation noise, the dependence of noise and Signal-to-Noise on different parameters were simulated.
针对微测辐射热计中的约翰逊噪声、1/f噪声与辐射噪声,着重探讨了微测辐射热计的偏置电压、电阻、噪声带宽等参数对其噪声和信噪比的影响,并根据分析仿真结果,提出了三种增加微测辐射热计信噪比的方法。
A separation method of naval ship radiated noise sources using measure data of radiated noise was introduced.
介绍一种从舰艇辐射噪声数据中分离辐射噪声源的方法.
(1) "Noise emission" means emission of noise from the source to the living environment of the neighbourhood.
（一）“噪声排放”是指噪声源向周围生活环境辐射噪声。
Analysis of ASE Noise Feature of Fiber Raman Amplifier
喇曼放大器的自发辐射噪声特性分析
Research of Modulation Feature Extraction from Ship-radiated Noise;
舰船辐射噪声调制特征提取方法研究
Research of Emission Noise Property of High-speed Railway Cars
高速铁道车辆辐射噪声特性初步研究
Control of the noise radiated from the motorcycle engine shell
摩托车发动机壳体辐射噪声控制研究
Error Analysis in Radiated Noise Measurement Due to Acoustic Focusing of Typical Sound Sources
典型声源声聚焦引起辐射噪声测量误差的分析
Acoustics--Measurement of noise emitted by rail bound vehicles
GB/T5111-1995声学铁路机车车辆辐射噪声测量
The Research of Measurement of Radiated Noise by Passive Synthetic Aperture Technique
被动合成孔径声纳辐射噪声测量方法研究
Measurement of noise emitted by vessels on inland water ways and harbours
GB/T4964-1985内河航道及港口内船舶辐射噪声的测量
The effects of the eradiating noise on account of the temperature and rate of flow are also studied.
还进行了温度和流量对辐射噪声影响的研究。
General method for measurement of airborne noise emitted by construction machinery and equipment
GB/T13802-1992工程机械辐射噪声测量的通用方法
RECOGNIZING SHIP OBJECTS BY THE SHAPE OF AVERAGED POWER SPECTRUM OF RADIATED NOISE
按辐射噪声平均功率谱形状识别船舶目标
Control of powerful noise radiated by plate ball mill from time and space angles
从时间与空间角度控制板式球磨机强辐射噪声
Studies on Wideband Beamforming for Moving Targets' Radiated Noise;
运动目标辐射噪声的宽带波束形成研究
(5) Management of Noise, Electro-Magnetic Radiation and Radioactivity
（五）噪声、电磁辐射和放射性环境管理
Preventing noise, electromagnetic radiation, and radioactivity pollution ?
防治噪声、电磁辐射、放射性污染。
Limits of airborne noise emitted by marine diesel engines
GB11871-1989船用柴油机辐射的空气噪声限值