查询词典 noise-power-ratio

Methods Forty healthy guinea pigs with normal Preyer's reflex were used. The animals were randomly divided into four groups: normal group, conditioning noise group, high-level noise group and conditioning noise followed by high-level noise group.

取健康成年豚鼠40只，随机分为正常对照组、噪声习服组、噪声损伤暴露组和噪声习服后损伤暴露组。

This article increase stationing measure in noise monitor and valuate, the effect of noise between department. To investigate the valuator, to conbine the subject valuate and equivalent continuous sound pressure level method. Study the different noise rating number between the different time and the real effection of our feeling between different types of noise.

本文在噪声监测与评价上增加了对楼栋内的布点测量，评价噪声对宿舍楼的影响；对评价者进行调查，将主观评价方法和等效连续声级结合起来应用到评价中，研究同水平的噪声值由于所处时段的差异对应人们感觉的不同以及不同类型噪声的大小与对人们的实际影响的关系。

Based on the noise theory and experi mentation ,the author founded the onli ne method to test current noise , validated the relation bet ween te mperature ,aperture and pressure with current noise .This paper firstly analyzed gener— ati ng mechanis mof discharge niose ,studied the measure and factor of discharge niose ,i ndicated an effective method for degradi ng the discharge noise ,which pro moted the performance of laser gyro fro m0.01°／h to 0.001°／h.

文中以氦氖气体激光器的噪声特性理论为指导，以试验研究为基础，建立了在线噪声电流测试方法，通过试验验证了温度、腔体毛细孔径、谐振腔充气气压等参数与放电噪声的关系，首次提出了放电噪声产生的机理，分析了电流噪声的检测方法及影响因素，给出了减小和抑制放电噪声的有效方法，使得激光陀螺的性能由0.01°／h 提高到0.001°／h。

At present, the city has chosen the 30 kinds of green plants mainly noise, absorption and scattering properties of the test, found the crown of large, heavy branches of trees, such as cypress, camphora, Ligustrum, Photinia, coral and so on, by Noise excellent skills; oleander, octagonal gold, small wax, shrubs and other mosquito-mother, but also the noise of the reactive barrier, which will provide noise reduction mature green residential experience.

目前，该市已选择了30种主要绿化植物噪音，吸收和散射特性的测试，发现树冠大，重型分行的树木，如柏树，香樟，女贞，石楠，珊瑚等，噪声优秀技能；夹竹桃，八角金，小蜡，灌木及其他经蚊子母亲，而且噪音屏障的反应，这将提供降噪成熟绿色住宅的经验。

Preprocessing consists of data selection, baseline adjustment, noise filtering and peak identification. Data selection removes preprimer data section which contains little useful information. Baseline adjustment adjusts the baselines of four channels to the same level. Noise filtering removes the impulse noise and white noise. Peak identification selects the peak data for use in cross matrix determination.

预处理包括数据段选取、基线调整、噪声滤除、峰值识别四个模块：数据段选取删除前段冗余数据；基线调整使得四色荧光信号的基线高度一致；噪声滤除去除信号中的脉冲噪声和白噪声；峰值识别选取峰值数据，作为求解串扰矩阵的数据。

Based on summarying the measures of traffic noise control in the world, in terms of theory and experience of noise control , as well as adapting concrete environmental condition and development tendency china western , this paper puts forward the measures of traffic noise control which reduct the effect of noise pollution and accelerat the management of highway environment protection .

在总结国内外防治交通噪声措施的基础上，根据噪声控制的理论经验，结合西部地区具体环境状况和发展趋势，提出了适合中国西部的交通噪声防治对策，以减少噪声污染和推动西部地区交通环保事业的发展。

This essay will remark on auto air-condition noise problems through studying expansion valve. The main reasons incurred noise are two, one is vibration, which is from big air bubble caused by the refrigerant flows through expansion valve. Another is resonance, which is from engineering working itself. So, the two methods for eliminating noise are found. On one hand, through increasing damp to weaken resonance. On another hand, through taking off air bubble to eliminate vibration. The essay presents method of solving noise through improving expansion valve and elaborate the disadvantages caused by these solvement.

本文从膨胀阀的角度去考虑解决汽车空调异响问题，认为产生异响的主要原因是制冷剂流经膨胀阀节流部时有大气泡存在引起振动与汽车发动机共振造成，从增加阻尼块来减振和分解大气泡来消除震动等两方面提出解决方法，并对此方法造成的不利方面也进行了阐述。

The information includes combustion, valve-open and valve-close information. But this signal also contains interfering noise, like exhaust noise and other noise eradiated from the other part of the diesel engine, and the frequency composition of useful signal and interfering noise are largely overlapped in the frequency band under 20 KHz.

但是提取的缸盖噪声信号中也含有柴油机工作时产生的排气噪声和机体其它部位辐射噪声等干扰信号，且干扰信号与有用信号的频率成分在20 kHz以下的频带内重叠在一起。

In view of the concrete crack image characteristic, it emphatically discussed the recognition system three core issues. Firstly, it particularizes image preprocessing technology for reducing noise of concrete crack image. On the base of anglicizing the noise of specimen crack image and the characteristic of the noise , it propose the scheme that a hybrid filter will be used to reduce noise and introduce the principle of a hybrid filter.

随后，针对混凝土裂纹图像的特点，着重讨论了识别系统的三个核心问题：首先，详细讨论了对混凝土裂纹图像进行降噪的图像预处理技术，在分析了试件表明裂纹图像噪声的基础上，结合试件裂纹图像噪声的特点，提出组合滤波器的降噪方案，并介绍了组合滤波器的原理。

Based on sound intensity measurement and the simulation test of pass-by noise, the main noise source of a motorcycle is identified. The results show that the induction and exhaust noises of the engine are the main noise sources of the motorcycle, and their share of contributions to the pass-by noise are determined.

通过声强测试技术和加速噪声的模拟试验对摩托车的主要噪声源进行了识别研究，结果表明进、排气噪声是摩托车的主要噪声源，并初步确定了进、排气噪声对整车加速噪声的贡献量。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。