noise suppressor

The writers have studied how to make a general audio frequency periodic noise suppressor by using a RC series-parallel frequency-selective circuit.

对采用RC串并联选频电路组成通用音频周期性噪声抑制器进行了研究。

An analysis on the fan noise pollution in paper mill and its control;

纸厂风机噪声污染分析与控制方法

Transformer substation noise pollution assessment and its control;

变电站环境噪声评价与防治

One approach to reducing noise of automobile rear axle gear assembling;

一种降低汽车后桥装配中齿轮噪声的途径

Adopting the Nonsymmetrical Dents of Gear to Reduce the Abnormal Yawp of Gear Pump;

采用非对称齿形减小齿轮泵的异常噪声

Design of Software and Hardware Sound Sampling System for Pumping Station;

泵站噪声采集系统的软硬件设计

Design of Sound Acquisition and Analysis System for Hydraulic Pump Station;

一种液压泵站噪声采集和分析系统的设计

The Research of Testing Method for Hydraulic Shock Absorber Sound;

液力减振器噪声检测方法的研究

Noises Comparison Between Axial-flow Fan and Centrifugal Fan and Methods of Deereasing of Noises;

轴流式与离心式风扇噪声比较及降低噪声措施

The influence and prevention of highway noises to people;

公路噪声的产生对人的影响及其防治

ECG analysis on still rolling workers exposed to high temperature and noises;

对接触高温噪声的轧钢工人心电图分析