Good practice on ventilation system noise control 控制通风系统噪音的优良手法
Good practice on pumping system noise control 控制抽水系统噪音的优良手法
The parallel termination can effectively suppress overshoot and undershoot that makes the signal swing less and the system noise tolerance larger 戴维南并行端接可以有效地抑制过冲和欠冲,使得信号的摆幅缩小,增强了系统的噪声容限。
The major noise resources of high - speed railway vehicles ( v 200km / h ) are wheel - rail rolling noise , structure noise , aerodynamic noise and collector system noise 高速铁道车辆(时速200km h )的噪声源主要是:轮轨噪声、构造物噪声、集电系噪声和空气动力性噪声。
The reduction of exhaust system noise is the key to the reduction of automobile noise . at present , the main method to reduce exhaust noise is by setting muffler in automobile exhaust system 减小排气噪声是降低汽车噪声的关键,目前在排气系统中安装排气消声器是减少排气噪声的主要方法。