GB/T 17248.5-2018

声学 机器和设备发射的噪声 采用准确环境修正测定工作位置和其他指定位置的发射声压级

Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections

GB/T 17248.3-2018

声学 机器和设备发射的噪声 采用近似环境修正测定工作位置和其他指定位置的发射声压级

Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections

GB/T 17248.2-2018

声学 机器和设备发射的噪声 在一个反射面上方可忽略环境修正的近似自由场测定工作位置和其他指定位置的发射声压级

Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections

German-Chinese Standardization Cooperation Commission

Standardization Commission

The German-Chinese Joint Committee of Industry and Trade is the most important coordinating body of the German Ministry of Economics and China's Ministry of Commerce. The Committee's main objective is to promote trade between the two nations, intensify their investment relations and strengthen technology transfer between the partners. Several working groups have been set up to address specific issues in greater detail. The group responsible for the technical rules sector is the German-Chinese Standardization Cooperation Commission. more