噪声标准翻译相关单词.doc

technical specification 技术规范high voltage direct current 高压直流 high voltage direct current substation 高压直流换流站audible noise 可听噪声foreword 前言scope 范围normative reference 引用标准sound radiation 声辐射acoustic fields 声场directivity of sound radiation 声辐射的方向性background noise 背景噪声topography 地形meteorological conditions 气象条件noise level 噪声级noise level limits 噪声限值land-use classifications time duration 持续时间noise performance limits 噪声性能限值sound pressure level 声压级A-weighted sound pressure levels A计权声压级sound emitting sources 声辐射源noise source 声源converter transformer 换流变压器power transformer 交流电源变压器transformer winding noise 变压器绕组噪声reactor 电抗器mechanism of sound generation 声音产生机制AC filter reactors 交流滤波电抗器smoothing reactors 平波电抗器self-tuned filter reactors 自调谐滤波电抗器capacitor 电容器cooling fan 冷却风机switching device 开关设备synchronous compensator 同步补偿器diesel generators 柴油发电机air conditioning plant 空气调节装置cooling circuit pump 冷却循环泵converter valve 换流阀air compressor 空气压缩机corona source 电晕源sound reduction measure 降噪措施substation layout 变电站布局tanked reactor 箱式电抗器air-cored reactor 空心电抗器enclosure 机壳damping 阻尼active noise 有源噪声vibration mitigation 振动缓解operation condition 运行条件normal operation condition 正常运行条件exceptional operation condition 异常运行条件sound level prediction 声级预测transmission path 传播路径calculation procedure 计算过程sequence of calculation 计算顺序attention term 衰减项result presentation 结果描述sound power 声功率级component sound power 组件声功率级force spectrum 力谱transfer function calculation sound pressure measurement 声压测量correction for background noise 背景噪声修正sound intensity 声强sound intensity measurement 声强测量key components 主要组件verification of key components 主要组件的检验acoustic environment 声学环境noise regulation 噪声控制point source 点声源spherical spreading 球体传播hemispherical spreading 半球传播quarter-spherical spreading 四分之一球体传播sound refraction 声音折射wind gradient 风梯度dry-type air-core reactor 干式空心电抗器magnetic field 磁场reactor winding 电抗器绕组symmetrical breathing mode 对称呼吸模式flexural mode 弯曲模式axial constraint 轴向约束spectrum of current 电流频谱electrostatic force 静电力converter harmonic 换流器谐波AC network harmonic 交流网络谐波equivalent source 等效声源geometrical parameter 几何参数reflecting obstacle 反射障碍物mirror source 镜面声源vibration velocity 振速resonance frequency 共振频率octave band 倍频程outdoor audible noise 户外可听噪声prospective contractor 前瞻性承包商HVDC project 高压直流输电项目flexible AC transmission system 柔性交流输电系统static Var compensator 静止型无功功率补偿装置static synchronous compensators 静止同步补偿器dated reference 标有日期的引用标准undated reference 未标日期的引用标准latest edition 最新版本sound level meter 声级计pattern evaluation test 模式评价试验preferred frequency 优选频率basic standard 基本标准reverberant field 混响声场test room 测试室reflecting plane 反射平面engineering method 工程方法precision method 精确方法anechoic and hemi-anechoic room 消声室和半消声室measurement surface 测量表面enveloping measurement surface 封闭测量表面multisource industrial plant 多源工业设备discrete point 离散点pressure variation 压力变化elastic medium 弹性介质sound wave 声波static pressure 静态声压r.m.s 有效值reference sound pressure 基准声压threshold of audibility 听觉阈average sound pressure level 平均声压级total sound pressure level 总声压级constant density 恒定密度speed of sound 声速normal sound intensity 法向声强sound intensity level 声强级reference sound intensity 基准声强normal sound intensity level 法向声强级sound power 声功率sound energy 声能量Smoothing reactor is one of the major noise source of the UHVDC converter station, and it is becoming increasingly important. In this paper, we study smoothing reactors ,with enclosures or not, under single-frequency test harmonic current, which frequency is 50 Hz, 150 Hz and 300 Hz, to test its sound power level in all frequency by sound pressure method . By analysis, the main noise component of smoothing reactor is generated by 300 Hz working current. Under 300 Hz working current conditions, applying spectrum analyzers and acoustic imaging system measure noise narrowband spectrum of smoothing reactors with enclosures or not, and acoustic imaging .Thereby, we can locate the noi