Source and characteristics of audible noise of AC substations;
交流变电站可听噪声来源及特性分析
Prediction of audible noise of AC UHV transmission lines based on relevance vector machine
基于相关向量机的交流特高压输电线路可听噪声的预测研究
Based on the three-phase double-circuit overhead transmission line model,the influences of the conductor-to-ground height,the conductor sequence,numbers and spacing of the split conductors,and the diameter of the sub-conductor on the power frequency electric field and magnetic field,the radio interference(RI),and the audible noise(AN) are analyzed.
以三相双回架空线路为模型,分析了导线对地高度、相序布置、分裂导线的根数、分裂间距、分裂导线子导线直径等因素变化对工频电场、工频磁场、无线电干扰和可听噪声的影响;提出了改善线路周围电磁环境的措施;根据工频电场的限值划定线路走廊的宽度;并分别比较了大雨、湿导线和晴天时输电线路周围的无线电干扰和可听噪声。
Additionally, the electric field on surface of conductor, the distributions of audible noise and power frequency electric-magnetic field at ground level, and lines current unbalance were discussed.
另外,还对特高压六相输电系统的导线表面场强、可闻噪声、工频电磁场分布以及不平衡性等方面进行了重点的论述,详细论证了特高压六相输电线路所具有的可行性和优越性。
Study on Audible Noise under AC UHV Transmission Line
特高压交流输电线下可听噪声的研究
Evaluation of Audible Noise Predicting Formulas for AC UHV Transmission Lines
对AC UHV输电线附近可听噪声预测公式的评估
Characteristic Frequency Analysis of Audible Noise Source in Transforming Region of UHV AC Test Base
特高压交流试验基地变电构架区可听噪声源特征频率分析
Evaluations of Several Audible Noise Predicting Formulas for 1 000 kV UHV AC Transmission Lines
几种1000 kV交流特高压输电线下可听噪声预测公式的评估
Experimental Research on Audible Noise and Radio Interference of Ultra-High Voltage Bundle Based on Corona Test Cage
基于电晕笼的特高压导线可听噪声和无线电干扰试验研究
Prediction of audible noise of AC UHV transmission lines based on relevance vector machine
基于相关向量机的交流特高压输电线路可听噪声的预测研究
Survey and Analysis of Audible Noise in Hebei Southern Electric Power Network
河北省南部电网输变电工程可听噪声测量与分析
Acoustics - Determination of occupational noise exposure and estimation of noise-induced hearing impairment???
声学－－职业性噪声暴露测定和噪声听力损伤估算
). As a flying jet plane leaves its noise behind it, we do not hear it until it has gone.
一个飞行着的喷气式飞机只有它飞过后我们才可听到噪声。
His waice is barely audible above the noise of the machinery
机器的噪声很响,他的声音几乎听不见
Acoustic Reflex Growth Function in Noise Induced Hearing Loss
噪声性听觉损害的声反射增长函数
His voice was barely audible above the noise of the machinery.
机器的噪声很响,他的声音几乎听不见。
equal listener response scale
等听者响应标度 -声学中噪声标度
Presently we heard a bustle, and a tread of feet.
不久我们听到一阵喧噪声，和脚步声。
Measurement Technique of Noise Acoustic Intensity Based on Vector Hydrophone
基于矢量水听器的噪声声强测量技术
Research on Suppression of the Atmospheric Noise and Environmental Noise in the Signal of the Laser Listening System;
激光侦听信号中大气噪声与环境噪声的降噪研究
EXPERIMENTAL STUDY ON NOISE HEARING DAMAGE BY HYPERBARIC OXYGEN THERAPY
高压氧治疗噪声性听损的实验研究
The noise of the aeroplane deafened us.
飞机的噪声使我们耳朵听不见了。