running noise

The testing results showed that the unloaded running noise source of precision panel saw was mainly from main saw blade and its aeromechanic noise was the largest.

测试结果表明精密裁板锯空载噪声源主要来源于主锯片，它的空气动力性噪声是最大的。

The machine also features synchronous belt transmission and low running noise.

同步带传动,运转噪音小等特点.

The frequency band energy of the running noise in 86~ 172 Hz increases conformably as the load of motor increases. The above frequency band energy can be acted as the main characteristics for reflecting the load change of motor.

经实验验证：电动机负载增加，运行噪声的86~172Hz频带能量呈现一致性增加，该频带能量可以作为反映负载变化的主要特征。

Making a comparison between the typical standard of moped running noise testing methods and regulations ( in the field of the operation requirements).

对轻便摩托车行驶噪声测量方法的典型标准和法规（在操作要求方面）做出比较。

Mechanism of noise during the running of sintered metal self-oiling bearings and the instrument and method for the determination of sliding noise have been described. The present paper gave emphasis on the main factors of influences on the sliding noise of self-oiling bearings during running.

介绍了烧结金属含油轴承运转时产生噪音的机理和测定滑动噪音的装置及方法，重点介绍了影响含油轴承运转时滑动噪音的主要因素。

The Horizontal Direction of Train Running Noise

列车运行噪声的水平指向性

Special convey-device, ensuring of smooth and concerted Running with low noise.

特殊输送装置, 保证输送线运行平稳协调、噪音低.

The transmission of ball bearing makes the machine running smooth with Iow noise and long life.

球形轴承传动使机器运转轻滑、噪音低、经久耐用.

An Elementary Analysis of the Testing Methods of Moped Running Noise

浅析轻便摩托车行驶噪声测量方法

The Effective Pass-by Duration of Train Running Noise

列车运行噪声的等效通过时间

It is shown by the test results that the array technology can identify the main noise sources on the surface of the passenger car running at high speed. So it offers the scientific basis for exterior noise control of passenger car.

试验结果表明，阵列技术可以识别出高速运动轿车表面上的主要声源，从而为轿车的车外噪声控制提供了科学依据。

Study on the noise suppression of the woodworking thicknesser in idle running

木工压刨床空转噪声控制技术的究研与应用

Experiment and Study on the noise of tne woodworking thicknesser in idle running

木工压刨床空转噪声的实验与研究

The spontaneous noise were suppress by filter and the time jitter is direct proportion to the running time.

这种时间抖动可以通过滤波器压制到与光孤子运行距离成正比。

The horizontal direction of train running noise is a important character of train radiating noise.

铁路列车运行噪声的水平指向性是铁路列车噪声辐射的重要特性之一。