现场声衰减检测

DIN EN ISO 11821:1997 声学.可移动声屏障声衰减现场测量

The document specifies methods for the measurement of the sound attenuation performance of removable screens in situ

Acoustics - Measurement of the in situ sound attenuation of a removable screen (ISO 11821:1997); German version EN ISO 11821:1997

GB/T 19887-2005 声学 可移动屏障声衰减的现场测量

本标准规定了室内或室外可移动屏障现场声衰减性能的评价方法，本标准是插人损失测量的工程及方法，测量既可用实际声源，也可用人工声源进行。 根据本标准计算的可移动声屏障的声衰减性能，与下列因素有关： ——围绕屏障边缘的声绕射； ——屏障构件的声透射

Acoustics-Measurement of the in situ sound attenuation of a removable screen

BS EN ISO 11821:1997 声学.可移动声屏障声衰减的现场测量

This International Standard specifies methods for evaluating the in situ sound attenuation performance of a removable screen, either indoors

Acoustics - Measurement of the in situ sound attenuation of a removable screen

ISO 11821:1997 声学 可移动声屏障声衰减的现场测量

This International Standard specifies methods for evaluating the in situ sound attenuation performance of a removable screen, either indoors

Acoustics - Measurement of the in situ sound attenuation of a removable screen

ASTM E966-18 现场测量建筑立面和立面元件空气声衰减的标准指南

Standard Guide for Field Measurements of Airborne Sound Attenuation of Building Facades and Facade Elements

ASTM E966-18 现场测量建筑立面和立面元件空气声衰减的标准指南

Standard Guide for Field Measurements of Airborne Sound Attenuation of Building Facades and Facade Elements

NF S30-009-1980 声学.空气中声音的衰减

Acoustics. Attenuation of sound in air.

GB/T 32062-2015 真空玻璃真空度衰减率现场检测方法 光弹法

本标准规定了用光弹法现场检测真空玻璃真空度衰减率的术语和定义、原理、装置、检测区域、检测步骤及检测报告。 本标准适用于各种规格的真空玻璃在服役过程中的真空度衰减率检测。 本标准获得的真空玻璃真空度衰减率评估结果可用于判断及预测、预警真空玻璃结构性能失效及安全问题

In-situ test method for degradation ratio of vacuum degree of vacuum glazing.Photoelastic method

SAE AIR 5662-2006 预测飞机噪声侧向衰减

This document describes analytical methods for calculating the attenuation of the level of the sound propagating from an airplane to locations

Method for Predicting Lateral Attenuation of Airplane Noise

ASTM F1936-10(2015 现场测量草皮比赛系统冲击衰减作用的标准规格

1.1x00a0;This specification establishes an

Standard Specification for Impact Attenuation of Turf Playing Systems as Measured in the Field

ASTM F1936-10 现场测量草皮比赛系统冲击衰减作用的标准规范

1.1 This specification establishes an in situ test method and maximum impact attenuation value for all

Standard Specification for Impact Attenuation of Turf Playing Systems as Measured in the Field

GB/T 7584-1987 声学 护耳器声衰减的测量 主观法

本标准具体规定了用听阈来确定护耳器声衰减的主观判断测量方法。可以对在类似条件下获得的声衰减性能数据进行比较，也能对护耳器各种型号按声衰减大小排队分档和分级，便于使用者根据需要进行选择，并能对性能有重要影响的结构特点和设计进行评价。 本标准参照采用ISO4869-1981《声学-护耳器声

Acoustics--Measurement of sound attenuation of hearing protectors--Subjective method

SR ISO 4869:1981 声学．护耳器声衰减的测量．主观法

Prezentul Standard Interna?ional stabile?te o metod? subiectiv? de m?surare a atenu?rii sonore a protectorilor individuali Tmpotriva zgomotului

Acoustics. Measurement of sound attenuation of hearing protectors. Subjective method

EN 24869-1-1992 声学.听力保护器.主观法测量声衰减

Acoustics - Hearing Protectors - Subjective Method for the Measurement of Sound Attenuation (ISO 4896-1 : 1990)

GB/Z 38251-2019 声学 换流站声传播衰减计算 工程法

Acoustics—Calculation of sound attenuation during propagation for electrical converter station—Engineering method

DIN EN ISO 11821:1997 声学.可移动声屏障声衰减现场测量

The document specifies methods for the measurement of the sound attenuation performance of removable screens in situ

Acoustics - Measurement of the in situ sound attenuation of a removable screen (ISO 11821:1997); German version EN ISO 11821:1997

GB/T 19887-2005 声学 可移动屏障声衰减的现场测量

本标准规定了室内或室外可移动屏障现场声衰减性能的评价方法，本标准是插人损失测量的工程及方法，测量既可用实际声源，也可用人工声源进行。 根据本标准计算的可移动声屏障的声衰减性能，与下列因素有关： ——围绕屏障边缘的声绕射； ——屏障构件的声透射

Acoustics-Measurement of the in situ sound attenuation of a removable screen

ISO 11821:1997 声学 可移动声屏障声衰减的现场测量

This International Standard specifies methods for evaluating the in situ sound attenuation performance of a removable screen, either indoors

Acoustics - Measurement of the in situ sound attenuation of a removable screen

BS EN ISO 11821:1997 声学.可移动声屏障声衰减的现场测量

This International Standard specifies methods for evaluating the in situ sound attenuation performance of a removable screen, either indoors

Acoustics - Measurement of the in situ sound attenuation of a removable screen

ASTM E966-18 现场测量建筑立面和立面元件空气声衰减的标准指南

Standard Guide for Field Measurements of Airborne Sound Attenuation of Building Facades and Facade Elements

ASTM E966-18 现场测量建筑立面和立面元件空气声衰减的标准指南

Standard Guide for Field Measurements of Airborne Sound Attenuation of Building Facades and Facade Elements

NF S30-009-1980 声学.空气中声音的衰减

Acoustics. Attenuation of sound in air.

GB/T 32062-2015 真空玻璃真空度衰减率现场检测方法 光弹法

本标准规定了用光弹法现场检测真空玻璃真空度衰减率的术语和定义、原理、装置、检测区域、检测步骤及检测报告。 本标准适用于各种规格的真空玻璃在服役过程中的真空度衰减率检测。 本标准获得的真空玻璃真空度衰减率评估结果可用于判断及预测、预警真空玻璃结构性能失效及安全问题

In-situ test method for degradation ratio of vacuum degree of vacuum glazing.Photoelastic method

SAE AIR 5662-2006 预测飞机噪声侧向衰减

This document describes analytical methods for calculating the attenuation of the level of the sound propagating from an airplane to locations

Method for Predicting Lateral Attenuation of Airplane Noise

ASTM F1936-10(2015 现场测量草皮比赛系统冲击衰减作用的标准规格

1.1x00a0;This specification establishes an

Standard Specification for Impact Attenuation of Turf Playing Systems as Measured in the Field

ASTM F1936-10 现场测量草皮比赛系统冲击衰减作用的标准规范

1.1 This specification establishes an in situ test method and maximum impact attenuation value for all

Standard Specification for Impact Attenuation of Turf Playing Systems as Measured in the Field

GB/T 7584-1987 声学 护耳器声衰减的测量 主观法

本标准具体规定了用听阈来确定护耳器声衰减的主观判断测量方法。可以对在类似条件下获得的声衰减性能数据进行比较，也能对护耳器各种型号按声衰减大小排队分档和分级，便于使用者根据需要进行选择，并能对性能有重要影响的结构特点和设计进行评价。 本标准参照采用ISO4869-1981《声学-护耳器声

Acoustics--Measurement of sound attenuation of hearing protectors--Subjective method

SR ISO 4869:1981 声学．护耳器声衰减的测量．主观法

Prezentul Standard Interna?ional stabile?te o metod? subiectiv? de m?surare a atenu?rii sonore a protectorilor individuali Tmpotriva zgomotului

Acoustics. Measurement of sound attenuation of hearing protectors. Subjective method

EN 24869-1-1992 声学.听力保护器.主观法测量声衰减

Acoustics - Hearing Protectors - Subjective Method for the Measurement of Sound Attenuation (ISO 4896-1 : 1990)

GB/Z 38251-2019 声学 换流站声传播衰减计算 工程法

Acoustics—Calculation of sound attenuation during propagation for electrical converter station—Engineering method