1) reducing noise and drag
减阻降噪
1.
This paper states the geometric shape design and principle of rigid traveling wave pasted layer for reducing noise and drag.
本文给出硬质随行波减阻降噪贴敷层的几何参数设计及原理。
2) vibration and noise reduction
减振降噪
1.
It is shown that the better result of vibration and noise reduction can be achieved when using them simultaneously in design.
环氧树脂混凝土和钢缆弹簧隔振器均有优良的阻尼性能 ,分析表明二者同时用在减振降噪设计中 ,可取得更好的减振降噪效
2.
The general design technology of vibration and noise reduction on newtype navigation administration boats is introduced.
介绍了新型航政艇的综合减振降噪设计技术:推进轴系选择柔性传动方式,主机组整体设计成半弹性隔振系统,在船体结构上粘贴阻尼钢板。
3.
For the purpose of cabin noise reduction, in this paper, the plane panel s vibrational characteristics before and after equipped with dynamic vibration absorbers are analyzed, the formulae for calculating the vibration and noise reduction of the plane panel with dynamic vibration absorbers are given, and the dynamic vibration absorber s parameters are discussed.
研究表明,动力吸振器用于飞机壁板减振降噪具有良好的前景。
3) reduction of vibration and noise
减振降噪
1.
Reach on properties of reduction of vibration and noise with foamed aluminium damping-ring;
泡沫铝齿轮阻尼环减振降噪特性分析
2.
For probing into the new way of reduction of vibration and noise in gearing,vibration math modal of gearing-plug system is set up by analyzing mechanism of vibration and noise in gearing.
为了探讨齿轮减振降噪的新途径,对齿轮传动过程中振动噪声产生的机理进行分析,建立齿轮/阻尼塞系统振动的数学模型。
4) noise and vibration reduction
减振降噪
1.
Study on Noise and Vibration Reduction of Providing Water System to High Building;
高层供水系统减振降噪研究
2.
A reasonable layout, calculational methods of loads on the structure under the train load, measures of noise and vibration reduction, and the arrangement of track in the depot, ar.
设计人员在建筑、结构、工艺等的设计中克服了没有相适应的设计规范和用地面积狭小等特殊环境产生的困难,提出了较合理的布局、在列车荷载作用下房屋结构的荷载计算办法、减振降噪措施,以及对车场轨道布置采取的对策。
5) reducing vibration and lowering noise
减振降噪
1.
The job provides a reliable foundation for reducing vibration and lowering noise level of the machine.
采用分部运转法、遮掩运行法、声强测量法和相干分析法四种方法，比较准确地鉴别了高速工业平缝机的噪声源，对该机减振降噪的研究提供了可靠的依
2.
Analyzed the structural and run of currency count machine,identified the most noise source and vibration source in experiment method,and discussed the method of reducing vibration and lowering noise.
分析了点钞机结构和运行情况,用试验方法识别其主要噪声源和振动源,深入探讨了点钞机减振降噪方法,取得了显著效果。
6) damping and noise reduction
减振降噪
1.
The necessity of damping and noise reduction in LIM rail transit system has been proved in this paper.
论述对直线电机轨道结构减振降噪的必要性,并就直线电机轨道交通振动与噪声的产生机理进行分析；在对加拿大及日本轨道结构的主要减振降噪措施进行分析的基础上,就我国在发展直线电机轨道交通时轨道结构减振降噪的主要研究思路进行初步探讨。
2.
Based on vibration and noise mechanism occurring on high speed train, basic thinking for damping and noise reduction for high speed rail transport is proposed and the utilization status of such materials is analyzed.
在高速列车的振动和噪声发生机理的基础上,提出了高速轨道交通减振降噪的其本思 路,分析了高速轨道交通的减振降噪材料的使用情况。
补充资料：吸声减噪
| 吸声减噪 absorption，noise reduction by 利用吸声装置（吸声饰面、空间吸声体等）吸收室内的混响声能以降低噪声的方法。吸声减噪适用于原有吸声较少、混响声较强的建筑物的降噪处理。吸声减噪能达到的A声级降噪量，在一般车间厂房为3～8分贝(dB)左右；几何形状特殊（声聚焦）、混响极严重的建筑物，降噪量可达12分贝左右。吸声装置的声学设计主要根据噪声源的频谱特性。吸声减噪的处理方式通常有以下几种：①房间面积较小的吸声减噪，宜对天花板、墙面同时作吸声处理。②车间面积较大时，尤其是扁平状车间，一般只作平顶吸声处理。③声源集中在车间局部区域而噪声影响整个车间时，应在声源所在区域的天花板及墙面作局部吸声处理，且应同时设置隔声屏障。④吸声降噪效果并不随吸声处理面积成正比增加，空间吸声体面积宜取房间平顶面积的40％左右或室内总表面积的15％左右。空间吸声体的悬挂高度宜低些，离声源近些。吸声减噪设计应同时满足防火、防潮、防尘等工艺与安全卫生的要求，同时还应兼顾通风、采光等。
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说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条