吸声蜗壳,sound-absorption volute
1)sound-absorption volute吸声蜗壳
1.The influence of different thickness of absorption material and cavity on the noise reduction of thesound-absorption volute at different speed was analyzed.采用在蜗板外衬贴吸声材料,并在吸声材料与外层隔板之间设置空腔的方法对某前向离心风机进行了蜗壳吸声降噪的试验测量,分析了不同转速、不同的吸声材料厚度和空腔厚度对吸声蜗壳降噪效果的影响。
英文短句/例句
1.Experiment Study of Noise Reduction with Sound-Absorption Volute for Forward-Swept Centrifugal Fan前向离心风机吸声蜗壳降噪的试验研究
2.horizontal single-stage double-suction volute pump卧式单级双吸蜗壳泵
3.Quantitative Prediction of Sound Radiation by Casing Vibration of Centrifugal Fan离心风机蜗壳振动声辐射的定量预测
4.Analysis on Effect of Volute Scattering on Aerodynamic Noise Propagation of Centrifugal Fan蜗壳散射对离心风机气动噪声传播的影响
5.Numerical Study on the Effect of Volute Thickness to Centrifugal Fan Structural Noise蜗壳壁厚对离心风机振动噪声影响的数值研究
6.Prediction of Noise Radiated by the Vibrating Volute Structure of Centrifugal Fan离心风机蜗壳振动辐射噪声的数值预测
7.In this paper, the effect of disc muffler on vibration and sound radiation of worm shell is discussed.探讨了圆盘型进气消声器对蜗壳振动和声辐射的影响。
8.Numerical Simulation and Analysis of Flow Field in Double Suction Impeller and Volute of Low Specific Speed Centrifugal Pump;低比转速离心泵双吸叶轮及蜗壳内部流场的数值计算与分析
9.Research in Viscosity and Sound-Absorbing Property of Core-Shell Emulsion with Hollow Structure;空心核壳乳液的粘性和吸声性能研究
10.The shell of a snail is its skeleton.蜗牛的壳是它的骨骼。
11.The snail retreated into its shell.蜗牛缩进壳里去了.
12.The entire, one-piece shell of a snail and certain other mollusks.蜗牛壳蜗牛或某些其它软体动物的完整、单一的壳
13.Influence of Temperature on the Gap between Concrete and Steel Liner in Spiral Casing Structure;温度对充水保压蜗壳结构蜗壳与外围混凝土间隙的影响
14.The Influence of Turbine Volute Section Changing Curve for Inner Flow and Outlet Parameters蜗壳截面变化规律对蜗壳内流动及其出口参数的影响
15.Hydrolysis of Chitosan with Chitin Immobilized Snailase甲壳素固定化蜗牛酶对壳聚糖的降解行为
16.Technological guide for assemble and welding of metal sporal case of turbine水轮机金属蜗壳安装焊接工艺导则
17.The snail has rotted away in its shell.这只蜗牛已经在壳里腐烂完了。
18.She crumbled an empty snail shell in her fingers.她用手指捏碎了一个空蜗牛壳。
相关短句/例句
spiral casing蜗壳
1.The Re-ionitriding of the Spiral Casing Tandem dies;蜗壳拉深模的稀土离子氮化
2.3D-FEM analysis on thespiral casing structure of Xilongchi pumped-storage hydropower station;西龙池抽水蓄能电站蜗壳结构三维有限元计算分析
3.Numerical analysis of three dimensional turbulent flow through a turbinespiral casing for Three Gorge projects;三峡机组蜗壳内紊流的三维数值分析
3)spiral case蜗壳
1.NC cutting of turbinespiral case by space spread calculation;利用空间展开技术实现水轮机蜗壳的数控切割
2.FEM analysis on steelspiral case with cushion layer of turbine;水轮机垫层蜗壳有限元分析
3.Study of dynamic characteristics of a giantspiral case with different embedment manners;不同埋设方式下巨型水轮机蜗壳结构动力特性研究
4)Volute[英][v?"lju:t][美][v?"lut]蜗壳
1.Effects of Structure of theVolute to Separation Efficiency of the Preheater Cyclone;蜗壳结构因素对预热器旋风筒分离效率的影响
2.CFD simulation of sand-water two-phase inner flow field of volute;蜗壳内部含沙水两相流动的CFD模拟分析
3.Numerical Simulation of Unsteady Flow in Centrifugal PumpVolute;离心泵蜗壳内部非定常流动的数值模拟
5)scroll case蜗壳
1.Application of polypropylene fibre in concretescroll case of Nierji hydropower station;聚丙烯纤维材料在尼尔基水电站混凝土蜗壳中的应用
2.Optimal design of ascroll case with natural frequency constraints;具有频率约束条件的蜗壳优化设计
3.Research on stressed characteristic ofscroll case in high-head hydropower station;高水头水电站蜗壳结构受力特性研究
6)scroll[英][skr??l][美][skrol]蜗壳
1.Investigation of the effect of section axisymmetry in a radial inflow turbinescroll;向心透平蜗壳轴向对称性影响的数值模拟研究
2.A Numerical Study of 3-D Flow In A Scroll;蜗壳内三维流动的数值研究
3.This paper presents one experimental and numerical investigation of the internal flow inside one radial inflow turbine, includingscroll, vane and impeller.蜗壳内采用单斜丝热线在同一位置旋转,在三个不同的方位测量后拟合计算得到气流的三维速度。
延伸阅读
吸声分子式：CAS号：性质：声波通过某种介质或射到某介质表面时，声能减少或转换为其他能量的过程称为吸声。表征材料吸声性能的参数是吸声系数(acoustical absorption coefficient)，即被材料吸收的声能与入射声能的比值。吸声系数大于0.2的材料称为吸声材料(acoustical absorption materials)。常用的吸声材料有玻璃棉、矿渣棉、卡普隆纤维、棉麻等植物纤维、泡沫微孔吸声砖等。
