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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 33928-2017 |
Reciprocating internal combustion engines—Measurement method for exhaust silencers—Sound power level of exhaust noise and insertion loss using sound pressure and power loss ratio 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 |
China National Standards Exhaust silencers internal |
 English PDF |
| GB/T 4759-2009 |
Exhaust silencers for internal combustion engines - Measurement procedure 内燃机排气消声器 测量方法 |
China National Standards Exhaust silencers internal |
English PDF |
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