The colors of your coat, hat and muffler shall harmonize.
你外套、帽子和围巾的色彩应
协调。
音器
器The colors of your coat, hat and muffler shall harmonize.
你外套、帽子和围巾的色彩应协调。
The driver deadened the noise of the car with a new muffler.
机安装了新的器减少汽车嗓音。
The new muffler device has simple structure,it has lesser effect on the resistance loss of chief ventil...
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,可广泛的应用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。
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。
明：以上
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