A silencer quietens the noise of the engine.

消声器把发动机噪音消弭了。

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 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器计方法。

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,可广泛应用于煤矿主要通风机消声降噪。

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车消声器隔板多工序冲压复合结构、工作原理。

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.

利用此种矩阵,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.

用于492Q发动机JCQ净消声器采用稀土小球为催剂，用正交频带加权法选消声器结构参数，取得良好消声、净性能。

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.

通过正交计,使新消声器各项指标得到提高。

A silencer quietens the noise of the engine.

消声器把发动机的噪音消弭。

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 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 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,可广泛的应用于煤矿主要通风机的消声降噪。

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍汽车消声器隔板多工序冲压复合模具的结构、工作原理。

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.

利用此种矩阵,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台上进行证。

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.

用于492Q发动机的JCQ净化消声器采用稀土小球为催化剂，用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。

A silencer quietens the noise of the engine.

消声器把发动机音消弭了。

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 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器优化设计方法。

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、防潮及果明,可广用于煤矿主要通风机消声。

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车消声器隔板多工序冲压复合模具结构、工作原理。

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.

利用此种矩阵,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.

用于492Q发动机JCQ净化消声器采用稀土小球为催化剂，用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。

A silencer quietens the noise of the engine.

器把发动机的噪音弭了。

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

司机安了新的器减少汽车嗓音。

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

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

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车器隔板冲压复合模具的结构、作原理。

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.

利用此种矩阵,计算了两种结构的器的传递损失,并在双传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.

用于492Q发动机的JCQ净化器采用稀土小球为催化剂，用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。

A silencer quietens the noise of the engine.

消声把发动机的噪音消弭了。

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

司机安装了新的消声减少汽车嗓音。

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的优化设计方法。

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

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

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车消声隔板多序冲压复合模具的结、原理。

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.

利用此种矩阵,计算了两种结的消声的传递损失,并在双传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.

用于492Q发动机的JCQ净化消声采用稀土小球为催化剂，用正交频带加权优化法优选消声结参数，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,使新消声的各项指标得到提高。

A silencer quietens the noise of the engine.

消声器把发动机的噪音消弭了。

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 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 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,可广泛的应用于煤矿主要通风机的消声降噪。

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车消声器隔板多工序冲压复合模具的结构、工作原理。

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.

利用此种矩阵,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台上进行了试。

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.

用于492Q发动机的JCQ净化消声器采用稀土小球为催化剂，用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。

A silencer quietens the noise of the engine.

消声器把发动机的噪音消弭了。

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 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 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,对要通风机的阻力损失影响小,、潮及降噪效果明,可广泛的应用于要通风机的消声降噪。

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车消声器隔板多工序冲压复合模具的结构、工作原理。

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.

利用此种矩阵,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.

用于492Q发动机的JCQ净化消声器采用稀土小球为催化剂，用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。

A silencer quietens the noise of the engine.

消声器把发动机的噪音消弭了。

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 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 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,可广泛的应用于煤矿主要通风机的消声降噪。

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车消声器隔板多工序冲压复合模具的结构、工作原理。

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.

利用此种矩阵,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台上进行了证。

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.

用于492Q发动机的JCQ净化消声器采用稀土小球为催化剂，用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。

A silencer quietens the noise of the engine.

消声器把发动机音消弭了。

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 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器优化设计方法。

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、防潮效果明,可广泛于煤矿主要通风机消声。

The article has described the structure and working principle of multiprocess composite die for automobile deafener closure.

介绍了汽车消声器隔板多工序冲压复合模具结构、工作原理。

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。