查询词典 noise abatement

The methods for controlling transformer noise are introduced: for noise source control,using high-quality silicon-steel sheet,and adopting effective measures in transformer design,techniques and installation;for noise propagation control,adopting muffler device,sound insulation board and isolation booth,etc.to enhance noise attenuation.

详细介绍了变压器的噪声控制方法，在噪声源控制上选用优质高取向硅钢片，在设计、工艺和安装等诸多方面采取有效措施降低噪声；在噪声传播过程中采用缓冲装置、消声法、设置隔音层、隔音室等方法增大噪声在传播过程中的衰减以降低噪声。

The noise frequency modulation signal was particularly analyzed. The Fokker-Planck equation of noise frequency modulation was presented and the Motion-Group Fourier Transform was used by converting the partial differential equation into the variable coefficient homogenous linear differential equations. Then the solutions were given by using the peano-baker series. So the probability density function of noise frequency modulation in the filter was given. On the basis of the probability density function the stochastic resonance of noise frequency modulation signal is analyzed.

首先建立了噪声调频干扰信号通过脉冲压缩雷达中频滤波器后所满足的福克尔－普朗克方程，然后利用群移傅立叶变换（Motion-Group Fourier Transform，MGFT）将此偏微分方程化成了变系数齐次线性微分方程组，并利用Peano-Baker级数法给出了该方程组的解，最后得到了噪声调频干扰信号通过脉冲压缩雷达中频滤波器后的概率密度函数，在此基础上研究了噪声调频干扰信号造成的随机共振现象。

The character of the target noise is studied systematically, especially the spectrum character of target noise are deeply analyzed. On the basis of it, the power spectrum of two sorts of target noise is estimated with the method of average periodogram using the actual measured data of target noise.

系统地研究了目标声场特性，对目标噪声的产生及其频谱特性进行了深入分析，在此基础上，利用目标噪声实测数据，采用加窗平均周期图法，对两类目标噪声进行了功率谱估计，并对其频谱特性进行了深入分析和研究。

Methods Thirty healthy guinea pigs with normal preyer's reflex were used . The animals were divided into three groups, the conditioning noise group, the high intensity noise group and the conditioning noise plus high intensity noise group.

取杂色，耳廓反射正常，鼓膜完整的豚鼠30只，分为三组：条件化噪声组，高强度噪声暴露组，条件化噪声加高强度噪声暴露组。

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。

The noise of Gold(750kW) wind power generator set can meet the requirement of the criterion of industry corporation noise control and the criterion of noise in city area , by the noise reduction measure thereinafter.

通过以上的降噪措施，金风750kW风力发电机组的噪音水平满足《工业企业噪声控制设计规范》和《城市区域环境噪声标准》的标准要求。

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。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？