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Based on this, cacelled the vibration noise with appropriate weight number and step size.From the research work in this paper,it is shown that the vibration noise can be cancelled effectively and cetain cancellation can be obtained in

同时,研究结果还表明:采用归一化LMS自适应滤波器进行舷侧阵振动噪声抵消的效果优于传统的LMS算法自适应滤波器,更有利于满足实时处理的要求。

As part of the master's thesis and based on experimental data, the paper analysed the airflow velocity and the noise level for four different auditorium chair diffusers with umbrella-shaped Flow breaker. It may be used as a reference for other projects and similar chair outlets airflow noise research.

本文针对几种不同类型的下送风器,在实验室测得其噪声声功率级及气流流速等数据的基础上,针对其气流分布和噪声特性等情况进行分析,旨在为实际工程设计及进一步深入研究提供借鉴和参考。

Moderate noise (75、85dBA), didn't has significant effect on simple control and reaction task such as two-hand coordinate tracking, complex reaction time and persuit aiming. After sustained exposure of 1. 5h to noise with intensity of 85、95 dB , there was a tendency to decrease in light tracking performance of dual task (light tracking and oddball vedio-moter reaction) with a very large difference among subjects. The attention distribution between main task and second task changed.

中等强度的噪声(75、85dBA),对于双手协调光标追踪、复杂反应时及目标跟踪等较为简单的操纵和反应并无显著影响;85、95dB强度的噪声持续暴露1.5h,可使双重任务(光标追踪和oddball视觉-运动反应)的光标追踪绩效有降低的趋势,并有很大的个体差异,主、次任务之间的注意分配发生了改变。

By the analysis for the characteristic of singular value of ideal signal and noise, it's pointed out that there is a big turning point in the singular value curve of ideal signal, but not in the one of noise, so the concept of curvature spectrum of singular value is proposed, which can effectively describe the turning point state of singular values of noisy signal.

分析了在Hankel矩阵方式下理想信号和噪声的奇异值特点,指出理想信号的奇异值曲线存在一个很大的转折点,而噪声的奇异值曲线则很平坦。

Therefore to understand a single pump or more transmission characteristics of the noise, heat pump unit base to explore ways to control noise, has a practical significance in general.

因此了解单台或多台热泵的噪声传播特性,探讨热泵机组群噪声防治的方法,具有一定的普遍现实意义。

This paper try to obtain various noise-control measures applied to different situations through analyzing noise transmission characteristics of hot pump units under natural conditions of ventilation and cooling .

为此,笔者试图通过分析风冷式热泵机组的噪声源特性,在满足热泵正常运行所需要的通风散热等条件下,总结出多种应用于不同情况下的噪声治理措施。

The wing ing noise of the long-eared owl was measured,and the results indicated that the circular-arc tooth shaped non-smooth leading edge of its wing s has remarkable influence on its flight noise reduction.

长耳鸮扑翼噪声测量试验表明,其翼前缘圆弧齿状非光滑形态对其飞行降噪影响显著。

Results The main occupational risk factors that existed in the tobacco plant were noise,dust,high temperature and chemical poisons.Monitoring results of analogy projects showed noise intensities were 74.9-92.4 dB,exceeding rate was 47.5%.The concentrations of dust,carbon dioxide and alcohol were 0.2-1.7,953-2 128,5.4-21.5 mg/m3,respectively,which were below occupational exposure limits.

结果该建设项目存在的职业病危害因素有噪声、粉尘、高温、化学毒物等,类比工程各种职业病危害因素的检测结果为:噪声强度为74.9~92.4 dB,超标率47.5%;烟草尘浓度为0.2~1.7 mg/m3,超标率为0%;作业场所生产性热源的综合温度为30.8~36.5℃,均为高温作业点。

The end linking the timing gears cap, the side wall of cylinder and the skirt section of the engineblock are the sound radiation resources of the two engineblock sides. Except that, this thesis calculates sound power level of radiated noise from the engineblock with MATV method. It is found that the noise radiated from the engineblock is slightly loud.

此外本文还应用MATV法计算了气缸体辐射噪声的声功率级,通过声功率级的计算发现:气缸体的辐射噪声偏高,达到了108.84dBA,并且在850Hz时,由于气缸体的激励频率与其第八阶固有频率相等,气缸体发生了共振,因而在该频率时,气缸体的辐射噪声最大,所占气缸体表面辐射噪声总能量比重也最高,该频率应该是本文噪声控制关心的重点。

We proposed the time-changed dynamic models of radar signals based on dynamic theory, and can analyze quality and quantity of the deinterleaving pulse train;(2) We proposed the algorithm to computer selfsimilarity exponent and detect successfully the object echo buried in noise according to self-similarity of noise and nonsimilarity of sine wave;(3) We also proposed a nonlinear dynamic filtering detection model.

1根据动力学理论,提出了雷达信号的时变动力学模型,利用这个模型可以对已经分选出来的雷达信号进行定性和定量分析;(2)提出了快速计算自相似性指数的算法,并利用噪声和正弦波分别具有自相似性和不具有自相似性的特点,成功地检测到淹没在噪声中的目标回波;(3)提出了一种非线性动力学滤波检测模型。

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推荐网络例句

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。