文中提出等效噪声功率谱密度的概念。
The concept of "equivalent noisy power spectral density" is introduced in this paper.
超声功率与超声频率可根据需要调整。
Ultrasonic power ultrasonic frequency may adjust according to the needs.
超声功率与超声频率可根据需要调整。
Ultrasonic power and ultrasonic frequency may adjust according to the needs.
本文介绍了一种毫瓦级超声功率测量计的研制。
This article presents the development of a milliwatt ultrasound power measurement system.
实验证明该方法能够相当准确地估计出噪声功率。
Experiments prove that the method can accurately estimate the noise power spectrum.
声辐射模态伴随系数与对应的辐射声功率成正比。
The adjoint coefficient of sound radiation modes is proportional to the corresponding sound radiation power.
对不同的空气动声的声功率和效率作了相互比较。
The sound power and efficiencies of these different aerodynamic sound have been compared with each other.
最后本文给出了应用本系统测量电机声功率的例子。
An example of sound intensity measurement for electric motor is presented.
超声功率是影响粗铝丝引线键合强度的最主要因素之一。
The influences of ultrasonic power on heavy aluminum wire wedge bonding strength were investigated.
介绍一种医用超声诊断设备声功率计量数据的处理方法。
A data processing method for the sound power of the medical ultrasonic diagnostic equipment is introduced in this paper.
脉冲声压级、声功率级、声功率随爆震频率的提高而提高。
Impulse sound pressure level and sound power level and sound power increase along with the increasing of detonation frequency.
本文对电视接收机的视频通道噪声功率互换前后进行了讨论。
The present paper discusses the noise powers of the video channel before and after their exchange.
对不同劲度系数的隔振支架对结构声功率流的影响进行了比较。
The measured power flows are compared for the different anti-vibration mounts with different stiffnesses.
给出了离心压缩机气动参数和结构参数与声功率级之间的内在关系。
The intrinsic relation between the pneumatic parameter, structural parameter and acoustic power level for centrifugal compressor is given.
本文介绍了一种基于虚拟仪器的新型超声功率检测系统的软件设计。
This paper mainly described the software design of a new type ultrasound power detecting system based on virtual instrument.
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.
控制振动板结构的体积速度是降低结构总声功率和振动能量的一种有效策略。
Controlling the volume velocity of vibration plate has previously been shown to be a good strategy to reduce its overall sound radiation and vibration energy.
接着推荐美国宾州大学噪声控制研究室关于喷流声功率与声压级的经验公式。
Some experimental formulae about jet sound power and jet noise pressure which are contributed by the noise Control Laboratory of the Pennsylvania State University are recommended.
实验结果表明，磷矿分解率随着超声功率、反应时间和水浴温度的增加而提高。
The experimental results show that the decomposition ratio increases with the ultrasonic power , reaction time and temperature .
实验结果表明，磷矿分解率随着超声功率、反应时间和水浴温度的增加而提高。
The experimental results showed that the decomposition ratio increased with the ultrasonic power, reaction time and temperature.
试验研究了不同超声功率条件下，键合时间对粗铝丝引线键合强度的影响规律。
The effect of bonding time on the bonding strength of thick aluminum wire wedge bonding was studied under different ultrasonic power conditions.
推导了表面振速分布不均匀的辐射器的辐射阻抗与辐射器辐射声功率之间的关系。
The relationship between the radiation impedance and the acoustic radiated power of the radiator with non-uniform vibrating velocity on the surface is formulated.
本文说明所研制的悬链式超声功率计的基本原理、结构设计、校准、误差及其优点。
A tethered float ultrasonic power meter has been built. Its measuring principle, design, calibration, error analysis and advantages are described in this paper.
采用双过滤白噪声功率谱模型描述地震动，并用林家浩虚拟激励法进行随机响应分析。
The seismic ground motion is assumed to be double filtered white noise, and pseudo excitation approach is employed to calculate the random response.
微波辐射计的定标噪声源提供定量噪声功率，是微波辐射计定标中不可缺少的重要部分。
The calibration noise sources of microwave radiometer. gives a quantitative noise power. They are an important and necessary part in calibration of microwave radiometer.
该文应用坐标变换法对该聚焦换能器的复杂声场分布进行了数值计算，并测定了其声功率。
The complex sound field distribution of the focused transducers was calculated by the coordinate transform method, and the acoustic power was measured.
介绍了一种测量辐射压力法的超声功率计设计原理，在超声功率计设计中融入智能控制的设计思想。
The designing principle of ultrasound power meter based on radiation pressure method is explained. In designing, intelligent controlling method is used.
介绍了一种测量辐射压力法的超声功率计设计原理，在超声功率计设计中融入智能控制的设计思想。
The designing principle of ultrasound power meter based on radiation pressure method is explained. In designing, intelligent controlling method is used.
应用推荐