消声

A silencer quietens the noise of the engine.

消声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.

介绍了汽车消声隔板多序冲压复合模具、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,计算了两种消声传递损失,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。