GB/T 33928-2017往复式内燃机排气消声器测量方法声压法排气噪声声功率级和插入损失及功率损失比国家标准
英文:Reciprocating internal combustion engines—Measurement method for exhaust silencers—Sound power level of exhaust noise...
英文:Reciprocating internal combustion engines—Measurement method for exhaust silencers—Sound power level of exhaust noise...