| 1. | Assessment on blower ' s noise pollution of a building roof
某楼顶风机噪声污染测评 |
| 2. | Reverberant room method for sound power level testing of ventilators
空调风机噪声声功率级测定?混响室法 |
| 3. | Application of noise control technique of movable combined mine fan
可移动组合式矿井风机噪声控制技术的应用 |
| 4. | The regulation for the main fan noise
风机噪声治理 |
| 5. | Experimental study on noise control of a centrifugal blower using tooth shape vane
齿形叶片降低离心式风机噪声的实验研究 |
| 6. | The noise of the fan is mainly consist of circumrotatory noise and backset noise based on the theoretical analysis
首先基于风机噪声理论的分析确定了影响风机噪声源的主要因素是旋转噪声和涡流噪声。 |
| 7. | The paper analysed the characteristics of noise pollution in cement plant harm to human health , and emphasized the control theory and detail method of noise from ball mill and fan , fianlly put forward the control measure
摘要文章分析了水泥厂噪声污染的特点，阐述了噪声对人健康的危害，重点分析了球磨机和风机噪声的控制原理和具体方法，提出了综合治理的措施。 |
| 8. | The problem of noise of the fan is studied with the non - linear theory , and pressure pulsation of axial flow fan ' s inside flow was measured by dynamic pressure sensor , the gas - structure coupled noise of contra - rotating axial flow fan was studied through a new perspective
摘要用非线性动力学的理论对风机噪声问题进行了分析，同时运用实验手段测量了轴流风机流场内部流动的压力脉动，从全新的角度研究了对旋风机的气固耦合噪声。 |
| 9. | The noise mechanism made by the fan tongue is further studied and the clearance between the tongue and the blade is invested experimentally , it is found that the gap of tongue is the key parameter to the noise and efficiency of the fan and the optimal gap is got based on the experiment
试验研究了风机风舌的噪声机理及不同风舌间隙对风机噪声的影响规律，试验结果表明选择适当的风舌间隙是降低风机噪声，提高风机效率的重要手段之一。 |
| 10. | It is concluded that the primeval design of hv ' ac system decide that the building noise environment is good or bad . as to say how to resolve the six sides problems : machine noise , machine vibration , fan noise , duct noise , draft noise and cross - talk noise
我们认为：建筑(使用hvac系统)声环境的好坏取决于hvac系统初期的设计，也就是如何解决好机械噪声、机械振动、风机噪声、管路噪声、气流噪声以及管路交互传递噪声这六方面的问题。 |
