A silencer quietens the noise of the engine.

消声器把发动机噪音消弭了。

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 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 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构、工作原理。

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

该消声装置构单,对主要通风机阻力损失,防尘、防潮及降噪效果明显,可广泛应用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.

利用此种矩阵,计算了两种构消声器传递损失,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球为催化剂，用正交频带加权优化法优选消声器构参数，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。