The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨复合式有源消声耳罩的控制器的优化设计方法。

The driver deadened the noise of the car with a new muffler.

安装新的消声器减少汽车嗓音。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声装置结构简单,对主要通风的阻力损失影响小,防尘、防潮及降噪效果明显,可广泛的应于煤矿主要通风的消声降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此种矩阵,计算两种结构的消声器的传递损失,并在双传声器随激励消声器验台上进验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动的JCQ净化消声器采稀土小球为催化剂，正交频带加权优化法优选消声器结构参数，取得良好的消声、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设计,使新消声器的各项指标得到提高。

The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨复合式有源消声耳罩控制器优化设计方法。

The driver deadened the noise of the car with a new muffler.

司机安装新消声器减少汽车嗓音。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声装置结构简单,对主要通风机损失影响小,防尘、防潮及降噪效果明显,可广泛应于煤矿主要通风机消声降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此矩阵,计算结构消声器传递损失,并在双传声器随机激励消声器试验台上进行试验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动机JCQ净化消声器采稀土小球为催化剂，正交频带加权优化法优选消声器结构参数，取得良好消声、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设计,使新消声器各项指标得到提高。

The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨了复合式有源消声耳罩的控制器的优化设计方法。

The driver deadened the noise of the car with a new muffler.

司了新的消声器减少汽车嗓音。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声置结构简单,对主要通风的阻力损失影响小,防尘、防潮及降噪效果明显,可广泛的应于煤矿主要通风的消声降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此种矩阵,计算了两种结构的消声器的传递损失,并在双传声器随激励消声器试验台了试验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动的JCQ净化消声器采稀土小球为催化剂，正交频带加权优化法优选消声器结构参数，取得良好的消声、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设计,使新消声器的各项指标得到提高。

The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨了复合式有源消声耳罩的控制器的优化设计方法。

The driver deadened the noise of the car with a new muffler.

司机安装了新的消声器减少汽车嗓音。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声装置结构简单,对主要通风机的阻力损失影响小,防尘、防潮及降噪效果明显,可广泛的应于煤矿主要通风机的消声降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此种矩阵,计算了两种结构的消声器的传递损失,并在双传声器随机激励消声器试验台上进行了试验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动机的JCQ净化消声器采稀土小球为催化剂，正交频权优化法优选消声器结构参数，取得良好的消声、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设计,使新消声器的各项指标得到提高。

The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨了复合式有源消声耳罩的控制器的优化设方法。

The driver deadened the noise of the car with a new muffler.

司机安装了新的消声器减少汽车嗓音。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声装置结构简单,对主要通风机的阻力响小,防尘、防潮及降噪效果明显,可广泛的应于煤矿主要通风机的消声降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此种矩,了两种结构的消声器的传递,并在双传声器随机激励消声器试验台上进行了试验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动机的JCQ净化消声器采稀土小球为催化剂，正交频带加权优化法优选消声器结构参数，取得良好的消声、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设,使新消声器的各项指标得到提高。

The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨了复合式有源消声耳罩的控制器的优化设计方法。

The driver deadened the noise of the car with a new muffler.

司安装了新的消声器车嗓音。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声装置结构简单,对主要通风的阻力损失影响小,防尘、防潮及降噪效果明显,可广泛的应于煤矿主要通风的消声降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此种矩阵,计算了两种结构的消声器的传递损失,并在双传声器随消声器试验台上进行了试验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动的JCQ净化消声器采稀土小球为催化剂，正交频带加权优化法优选消声器结构参数，取得良好的消声、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设计,使新消声器的各项指标得到提高。

The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨了复合式有源罩的控制的优化设计方法。

The driver deadened the noise of the car with a new muffler.

司机安装了新的减少汽车嗓音。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该装置结构简单,对主要通风机的阻力损失影响小,防尘、防潮及降噪效果明显,可广泛的应于煤矿主要通风机的降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此种矩阵,计算了两种结构的的传递损失,并在双传随机激励试验台上进行了试验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动机的JCQ净化采稀土小球为催化剂，正交频带加权优化法优选结构参数，取得良好的、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设计,使新的各项指标得到提高。

The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨了复合式有源消声耳罩控制优化设计方法。

The driver deadened the noise of the car with a new muffler.

司机安装了新消声减少汽车嗓音。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

该消声装置结构,主要通风机阻力损失影响小,防尘、防潮及降噪效果明显,可广泛应于煤矿主要通风机消声降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此种矩阵,计算了两种结构消声递损失,并在双声随机激励消声试验台上进行了试验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动机JCQ净化消声采稀土小球为催化剂，正交频带加权优化法优选消声结构参数，取得良好消声、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设计,使新消声各项指标得到提高。

The optimum design of the controller of compound active noise cancellation earmuff is discussed.

探讨了复合式有源耳罩的控制器的优化设计方法。

The driver deadened the noise of the car with a new muffler.

司机安装了新的器减少汽车嗓。

The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...

装置结构简单,对主要通风机的阻力损失影响小,防尘、防潮及降噪效果明显,可广泛的应于煤矿主要通风机的降噪。

The sound tranfer loss of 2 kind of muffler structures are calculated, then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig.

利此种矩阵,计算了两种结构的器的递损失,并在器随机激励器试验台上进行了试验验证。

JCQ depurant-muffler is adopted on 49ZQ engine using small rare-earth element balls as catalyst and took the method of quadrature frequency band optimization to opetmize the configuration parameters.

于492Q发动机的JCQ净化器采稀土小球为催化剂，正交频带加权优化法优选器结构参数，取得良好的、净化性能。

By using this method, the effects of various parameters on the performance of the exhaust muffler and a variation law are clear and all the indexes of the new muffer are improved.

通过正交设计,使新器的各项指标得到提高。