扼要地介绍了一套最近研制成功的高速水流空化噪声测试系统。
It is briefly introduced that a set of high flow cavitation noise measuring system has been used recently.
通过采用国际上先进的实验室比对和能力验证方法，提出了相位噪声测试系统的比对方案。
The comparison method in phase noise measurement system is introduced by means of the advanced way in interlaboratory comparison and proficiency testing.
该文提出了虚拟噪声测试系统的设计方案，设计了虚拟噪声测试系统的硬件系统与软件系统。
This article has put forward the system design plan of virtual noise tested, designing the systematic hardware system and software system of the virtual noise.
叙述了虚拟仪器技术在噪声测试中的应用，分析了噪声源，设计和选择了噪声测试系统的软件部分。
This article discusses the application of virtual instrument in the measurement of noise, analyzes the source of the noise and designs the software of the measurement system.
有几种办法可以尽量降低测试系统中电离干扰引起的噪声。
There are several ways to minimize noise in the test system due to ionization interference.
结果表明：所建立的测试系统可满足工程精度要求，能有效识别拖拉机主要噪声来源；
The results indicate that the established test system meet the requirement of engineering precision and can distinguish main tractor noise source effectively.
最后利用该测试系统对飞机座舱模型噪声无源控制系统进行了控制性能测试，控制效果明显。
The experimental result of the control performance of the passive noise control system, shows that the control effect was notable.
介绍了一种基于虚拟仪器的电子器件低频噪声测试分析系统。
A noise testing and analyzing system of electronic device, based on the idea of virtual instrumentation, is introduced.
不过，这种对称性对于噪声抑制没有意义，系统应当能在没有信号时也能抑制噪声的发生（侵入），事实上，这通常是系统测试所需要做的。
The system must reject noise even when there is no signal and, in fact, this is usually how system noise testing is done.
运用该噪声识别模型及所介绍的测试分析系统，对GZ 6921型后置发动机客车噪声源进行了识别。
Noise source identification for the model GZ6921 bus having rear mounted engine has been car ried out by means of the noise source identification model with testing and analysing system recommended.
本文介绍电液伺服系统的几种动态测试方法，包括随机噪声测试，锤击法测试和扫频测试。
In this paper several dynamic testing methods of electrohydraulic servo systems are introduced, including stochastic noise test, hammering test and sweep frequency test.
序列信号可以模拟白噪声，广泛应用于扩频通信、数字加密、数字系统测试等领域。
The M-sequences signal can simulate the white noise, which has been widely applied in the fields of spread spectrum communication, digital cryptography, digital system test and so on.
本文介绍一个噪声自动测试系统。
虚拟暗室的测试理论是用于普通环境下的EMI测试的新方法，它的基础是自适应噪声抵消系统。
Virtual chamber theory describes a new method used to test equipments EMI in normal environment that is based on adaptive noise cancellation system.
另外，水文对噪声测量系统和测试方法进行了讨论，并提出了一些建议。
In addition, the noise measurement system and method are discussed in the paper and some Suggestions are given.
背景噪声的存在，使得说话人识别系统的训练环境和测试环境发生失配，导致系统性能发生急剧下降。
The background noise leads a mismatch between the training environment and testing environment, and degrades the performance of speaker identification system.
针对低频噪声测试的频率范围，选择了合适的数据采集板卡，完成了评价系统的采集模块。
According to the noise test frequency range, select the appropriate data acquisition board and complete the evaluation system of collecting module.
本文讨论了常用的噪声系数测试方法—Y因子法中高频及中频衰减器本身失配和测试系统中其它部分的影响所造成的测试误差。
This paper discussed the error in the measurement of noise figure—The method of Y factor , The error is caused by mismatch of RF attenuater and IF attenuater and the others in the measurement system.
由于噪声的存在，会使测试分析系统所采集到的焊接电弧电信号的数据误差增大，数据的精确程度会受到干扰而发生变化。
Welding arc data error of signal collected will be increased by the existence of noise. Accurate degree of data will be interfered and change.
测试和分析电机的振动为电机的故障诊断和电机的噪声控制提供了途径，因此有必要建立一个电机振动测试分析系统。
Measuring and analyzing the vibration of electric motor provides a way to detect motor's fault and reduce noise. It is vital of importance to develop a measurement and analysis system.
研究干扰测试系统的噪声源，分析噪声主要的传播途径和性质。
Study on the interference of the noise source of the test system, analyzing the spreading primarily path with kind.
测试结果表明，该系统具有很低的噪声底部，可满足绝大部分测试需要。
The test results indicate that the system has a very low noise background and can satisfy the most test requirements.
另外，对测试系统的噪声进行了分析和计算，通过误差分析确定了设备的静态特性。
In addition, noise of the system was analyzed and calculated, static characteristics were determined by error analysis.
在流动vlbi的观测试验中，天线系统噪声温度和天线效率是观测前系统调试和检测的两项重要内容。
Antenna system noise temperature and antenna efficiency are the most important items in the system debugging and checking before the VLBI observation.
该系统主要完成两大类功能：测试低噪声器件的噪声温度和校准固态噪声源的超噪比。
The system provides two major functions including measuring noise temperature of low noise devices and calibrating the Excess noise Ratio (ENR) of solid-state noise sources.
详细分析了微震动测试系统的各种噪声源。
In the paper, most kinds of noise source of micro seismic measurement system are analyzed in detail.
从简单的功率放大器和低噪声放大器到完整的收发器与系统，通过一个通用测试头接口就可以完成测试。
From simple Power Amplifiers and LNAs to complete Transceivers and Systems, testing is accomplished through a universal test Head interface.
从简单的功率放大器和低噪声放大器到完整的收发器与系统，通过一个通用测试头接口就可以完成测试。
From simple Power Amplifiers and LNAs to complete Transceivers and Systems, testing is accomplished through a universal test Head interface.
应用推荐