摩托车；声强测量；噪声控制；
声强测量允许精确的鉴别、孤立、列举单个噪声源。
Sound intensity measurement allows accurate identification, isolation and ranking of individual sound sources.
分析DFT泄露误差对声强测量的影响，进行模拟计算。
The influence of the DFT leakage errors on the sound intensity measurement is analyzed and the simulation examples are presented.
声强测量可以用于过程监测、故障诊断和产品研究与开发。
The measurement of sound intensity can be applied to course detect, product research and development applications.
所以在应用双传声器声强测量法测量声功率时将受到有旋性的影响。
The measurement of sound power by use o the two-microphone technique will be affected by the rotation of the active intensity.
本文对声强测量的有效性作了较全面分析，为精确的声测量奠定了基础。
The effectiveness of sound intensity has been analysed and the basis for precision acoustic measurement has been laid in this paper.
该文介绍了声强法的原理和通风机噪声的声强测量方法，有一定实际应用价值。
This paper introduces the principles of sound intensity method and the application of the method to measure the noise of the fan.
声强测量可以剔除其他声音的干扰，准确的确定声源的位置，即进行声源定位。
Sound intensity measurements accurately capture only the sound produced by the source under test, eliminating interference from other sounds and realizing the location of the sound.
相位失配误差是声强测量系统的主要误差源，仅靠提高仪器的精度很难消除这一误差。
The phase mismatch error is the main error source of sound intensity measurement system. It is difficult to eliminate this error only by upgrading the accuracy of instrument.
第二章介绍波动方程、声能、声能流密度、声强及度量方法、双传声器互谱声强测量原理。
In chapter two, wave motion equation, sound energy, sound energy flux density, sound intensity and its scaling method and the theorem of two-microphone sound intensity have been introduced.
根据双水听器测量声强法原理进行了误差分析，提出了该双水听器声强测量系统的校准方法。
According to the principle of two-hydrophone method for intensity measurement, the error analysis is done.
运用声强测试技术的双传声器法原理，对一台车用汽油发动机在半消声室内进行了声强测量。
Based on "two-microphone" method, a sound intensity measurement was carried out towards a vehicle four-stroke gasoline engine in a semi-anechoic room.
通过用声强测量系统对水下大型结构体进行了辐射噪声声功率的测定以及噪声源的识别和定位的实验。
The measurement of radiation noises from an underwater structure body and identification and location of noise sources were carried out by using a sound intensity measurement system .
本文采用表面声强测量及其频谱分析方法对华中工学院激光研究所研制的5kw横流电激励连续CO_2激光器的噪声源进行识别。
Working noise sources are identified for a 5kw transverse flow CW CO2 Laser made by Laser Institute of Huazhong University of Science and Technology.
基于双水听器互谱测量法，研制的水声声强测量设备可用于测量水下声源产生的声场中任意点的声强量值或任意面上的声强量值分布。
Based on measuring the cross-spectrum density of sound pressure between two hydrophones, the facility for underwater sound intensity measurement is investigated and designed.
本文利用UA0914声强耦合腔产生的同一声场条件，测量声强测量系统两通道之间的传递函数，进而对两通道间的相位不匹配误差进行修正。
The phase mismatch errors are corrected by measuring the transfer function between two channels at the same acoustic field provided with B&KUA0914 inside in-tensity coupler.
方法是根据有关卫生标准及检测方法对生产设备、休息室、控制室等作业场所进行声强和频谱的测量。
Methods the sound level and frequency were measured according to the corresponding health criterion and measuring method at big production equipment, crush room, control room and workshop.
通过对6480型驱动桥的噪声功率、表面声强、表面声压、表面振动加速度以及相应的时频谱进行了全面、系统的测量和分析。
The noise power, sound intensity, sound pressure, vibration acceleration and corresponding time-frequency spectrum of 6480 driver axle surface were measured and analysed.
目的分析远洋测量船噪声强度对作业人员听力的影响。
Objective to explore the hearing changes in seamen exposed to oceangoing vessel noise.
有功声强的无旋分量与表面声强有关，因此测量表面声强可避免有旋性的影响。
Because the irrotational component of the active intensity depends on the surface sound intensity, measuring the surface sound intensity can avoid the effect of the rotation.
本文对JHC6400型汽车后桥的噪声功率、表面声强、表面声压、表面振速及相应的频谱等进行了全面、系统的测量与分析。
The noise power, sound intensity, sound presure, vibration velocity and corresponding frequency spectrum of JHC6400 rear axle surface were measured and analysed.
本文从工程实用角度出发，以实验分析为基础来探讨声强法测量声功率的误差问题。
In this paper, the errors of sound power determination using sound intensity measurement are studied, based on the analysis of experimental results with the eyes of engineering application.
最大限度地降低噪声强度，对于提高SDI- MWD无线随钻测量仪信号质量至关重要。
Reducing noise as much as possible is significant to improve signal quality of SDI-MWD.
在高声强下测量了微圆孔处声激发射流的速度和微圆孔的非线性声阻抗。
Both the velocity of the sound-excited jet flow at a small circular orifice and the nonlinear impedance of the orifice are measured at high sound intensity.
使用声强法对木工带锯机的噪声特性进行了测量，测得三面的声强值和噪声的矢量图、高线图、三维图。
The noise characteristics of the idle bandsaw were measured with sound intensity method. The values of sound intensity, vector chart, contour chart and mesh chart of noise were obtained.
基于声强矢量测量法提出了舰船目标运动参数的估计方法，并提出了快速算法。
Based on acoustic intensity, the estimation of ship motion parameters is put froward, and a rapid algorithm is introduced.
基于声强矢量测量法提出了舰船目标运动参数的估计方法，并提出了快速算法。
Based on acoustic intensity, the estimation of ship motion parameters is put froward, and a rapid algorithm is introduced.
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