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制器优设计方法。

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

司机安装了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器传递损失,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JCQ消声器采稀土小球为催剂，正交频带加权优法优选消声器结构参数，取得良好消声、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,尘、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.

利阵,计算了两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.

探讨了复合式有耳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.

探讨了复合式有源耳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，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,计算了两种结构传递损失,并在双传随机激励验台上进行了验验证。

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、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,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。