China 'GB/T 1859.4-2017
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 1859.4-2017
Reciprocating internal combustion engines—Measurement of sound power levels using sound pressure—Part 4:Survey method using a reference sound source 往复式内燃机 声压法声功率级的测定 第4部分:使用标准声源简易法
Issued Date:2017-05-12
Implemented Date:2017-12-01
Issued by:
The Standardization Administration of the People's Republic of China
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