expansion chamber
英 [ɪkˈspænʃn ˈtʃeɪmbə(r)]
美 [ɪkˈspænʃn ˈtʃeɪmbər]
膨胀室
双语例句
- The placement of sound-absorbing material in the expansion chamber can enhance the noise reduction at mid to high frequencies, and eliminate the pass-frequencies.
膨胀腔包覆吸声材料可以改善中高频消声效果，同时消除通过频率； - An expansion tank has a chamber in which air is locked inside a bladder or diaphragm.
一个膨胀水箱，空气中有一个是膀胱或隔膜内锁定室。 - Fluid Dynamic and Acoustic Performance Analysis of Automotive Expansion Chamber Muffler; Acoustic-structural sensitivity analysis using FEM/ BEM
车用扩张腔消声结构流体力学与声学性能的研究用有限元/边界元法进行声学&结构灵敏度分析 - Design of Spherical Expansion Chamber Silence Element
球形扩张式消声结构的设计思路 - Acoustic model and design for expansion chamber muffler
扩张室式消声器的声学模型及设计 - Because engine induction noise is mostly in the low frequency region and the controlling measures for reducing the induction noise are different from that of exhaust noise. It is difficult to attenuate the induction noise entirely with a common expansion chamber silencer or an air filter.
发动机进气噪声大多属于低频噪声，与排气噪声相比，在控制技术上具有特殊性：采用常用的扩张腔消声器（或空气滤清器兼作消声器）很难使进气噪声得到足够衰减； - Applying the theory of acoustic transmission in a tube and the quadripole we deduce the transmission loss of a single expansion chamber with a insert tube.
应用管道中声传播理论和四极子理论导出带插入管的单膨胀室的传声损失。 - Flexible Thermal Expansion Molding of a Combustion Chamber Liner Formet
软模热膨胀法成型发动机燃烧室壳体贴壁内衬 - Expansion Chamber Type Sound-insulating Structure at Shaft Through Hole
轴孔扩张管隔声结构 - Calculation on CASTEX Extrusion Force of Side-Direction Extrusion with an Expansion Chamber
CASTEX连续铸挤的侧向扩展挤压挤压力计算 - Numerical simulation of hydrogen-oxygen detonation wave propagation in an expansion chamber
氢氧爆轰波在变截面扩张管道中传播的数值模拟 - The Sound Wave in the Pipeline and the Acoustic Energy of Expansion Chamber
管中声波与膨胀腔的声学能量 - Considering the resonance and expansion chamber of perforated pipe, its theoretic model is developed and perfected according to acoustic transfer theory.
考虑穿孔共振消声单元具有共振和扩张两种消声功能，依据声传播理论，发展和完善了穿孔共振消声单元理论模型； - Frequency response of sound transmission loss for noise silencers of expansion chamber
膨胀室消声器传声损失的频率响应 - Recent status and analysis of research on Boling liquid expanding vapor expansion ( bleve) blast chamber
蒸气爆炸研究现状及问题分析 - The prototype of the time expansion chamber
一个小型时间扩展室 - Take an example, the insertion loss of simple expansion chamber muffler has been calculated.
作为应用实例，文中对简单膨胀腔消声器的插入损失进行了计算。 - Results show that gas expansion in central region of vortex chamber caused by swirling flow is an important reason for the refrigerating effect of vortex tube.
结果表明：涡流导致涡流室中心区域气流膨胀是涡流管产生制冷效应的一个重要原因。 - A two-fluid model together with a k-ε-kp two-phase turbulence model is used to predict swirling gas-particle flows in coaxial jets discharged into a sudden expansion chamber.
由统一二阶矩的两相湍流模型出发，在各向同性的条件下获得k－ε－kp两相湍流模型。用后者模拟了旋流数为0.4的同轴进气有旋湍流突扩气粒两相流动。 - The blasting circuit breaker and the studied self-extinguishing circuit breaker that are in the same voltage level are compared. It proves that the arc energy can be used to help build the pressure of the expansion chamber and extinguishing the arc in order to lessen the driven energy.
并且对同等级下压气式断路器和自能式断路器进行了比较，表明本文所研究的自能式断路器是可以利用电弧能量熄灭电弧本身达到减小操作功的目的。 - The four-pole parameters of a straight duct and transmission loss of an expansion chamber have been calculated and compared with the results obtained by means of one-dimensional theory.
文中计算了直管段的四极参数及膨胀腔的传递损失，并与一维理论结果进行了比较。 - It is also study the problem that the selection of time step and the mesh size has influence on the simulation precision. Then, the paper studies the transmission loss of the simple expansion chamber muffler changes with frequency under different structural parameters.
研究了时间步长和网格尺寸等计算参数的选择对仿真精度的影响。然后，计算了不同结构参数下简单扩张式消声器传递损失随噪声频率的变化规律。 - The results showed that: ( 1) The temperature distribution presented reduced form the center of the expansion chamber to both sides gradually.
结果表明：（1）连续挤压成形过程中两种材料的温度分布均呈现由扩展腔中心部位向两侧逐渐降低的趋势。 - By comparing the measuring result and the simulation result with the theoretical value in the one-dimensional plane wave of the simple expansion chamber muffler transmission loss, the indirect calibration of transmission loss measurement is realized on the test rig on condition that there is no precise theoretical value.
将简单膨胀腔消声器传递损失的测量值、仿真结果与一维平面波理论值进行比较，在无精确理论值的条件下实现了对试验台上消声器传递损失测量的间接标定。 - Acoustic mode as an important acoustical parameter of expansion chamber. This thesis utilize the geometric size variables of the expansion chambers to explain the internal relations between transmission loss and acoustic mode.
声模态作为扩张腔的一个重要的声学参数，本文利用改变扩张腔的各种几何参数探究了声模态与传递损失的内在关系。 - The calculation methods of insertion loss and exhaust radiated noise were introduced, and then insertion loss and exhaust radiated noise were calculated and analyzed for a simple expansion chamber muffler.
在介绍了插入损失与排气辐射噪声的计算方法后，对一简单膨胀腔消声器进行了插入损失和排气辐射噪声的实例计算与分析。 - However, the traditional exhaust silencers, which are normally constructed by combination of expansion chamber, and perforated pipe or perforated board, are with high exhaust resistance, but poor noise reduction especially for the low-frequency band noise.
而传统排气消声器大都由扩张室加穿孔管或穿孔板等组合而成，其排气阻力大，消声性能差，特别是对排气噪声中占主导地位的低频部分消声效果差。 - United COMSOL with MATLAB programming, numerical results show that on the target wave number the acoustical performance of the optimized muffler is much better than a simple expansion chamber muffler considerably.
联合COMSOL与MATLAB编程，数值计算结果表明在目标波数下优化后的消声器声学特性远优于简单膨胀腔消声器。 - Then, on the basis of the topology optimization, the size optimization is further studied. While Expansion chamber on the internal structure changed, transmission loss will be changed.
接着在拓扑优化的基础上进一步研究了尺寸优化的方法。膨胀腔内部结构的变化会引起其传递损失的变化。 - The results show that the double expansion chamber muffler with intubations has better comprehensive performance.
结果表明，双节串联式膨胀室消声器具有较优的综合性能。