muffler GRE

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

司机安装了新声减少汽车嗓。

The colors of your coat, hat and muffler shall harmonize.

你外、帽子和围巾色彩应该协调。

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

该声装置结构简单,对主要通风机阻力损失影响小,防尘、防潮及降噪效果明显,可广泛应用于煤矿主要通风机声降噪。

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,计算了两种结构声递损失,并在双声随机激励声试验台上进行了试验验证。

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,使新声各项指标得到提高。