橡胶是一种重要的水声学材料。
往墙壁和天花板上喷雾声学材料或表面纹理。
Spray acoustic materials or texture finish over walls and ceilings.
声学材料是降低噪声，改善声环境的有效措施。
The acoustic material is an effective measure which could reduce noise and improve acoustic environment.
第二，声学材料隔声量测量系统的构建及测量。
Second, developing the sound transmission loss measuring system.
在应用声学领域，声学材料与结构的吸声测量始终是一项重要的工作。
In applied acoustics field, the sound absorption measurement of an acoustic material and structure is always an important and basic task.
上海腾音实业有限公司是一家集研究、开发及生产于一体的声学材料企业。
Shanghai turnkey sound industrial co., LTD. Is a collection of research, development and production of acoustic materials enterprises.
玉音声学工程致力于建筑声学空间设计，并提供声学材料和安装施工的专业公司。
The beautiful sound acoustical engineering devotes to the architectural acoustics space design, and provides the acoustic material and the installment construction Specialized company.
实验和理论显示，对于局域共振声学材料而言，动态质量密度甚至还会变成是负的。
The dynamic mass density can even be negative for the locally resonant sonic materials, as demonstrated both experimentally and theoretically.
本方法比较实用，分析结果对平台区结构声学设计、声学材料选型和布置形式具有指导作用。
This method can be put into practice easily. The analysis result is of guidance value to acoustic structural design of sonar platform area, choice and collocation of acoustic viscoelastics layer.
线性阵列超声波换能器设计基本原理的核心，是公司专业定制压电设备技术和固态声学材料的相关知识。
At the heart of our array design philosophy is our custom piezoelectric technology and our solid acoustic materials knowledge.
广州市凯丰汽车用品公司是一家集研发、设计、生产于一体的专业控制声音和振动方面的声学材料制造商。
Guangzhou Kaifeng automotive supplies company is a research and development, design, production in one professional control sound and vibration, acoustic material manufacturers.
那让我想起另一个我们需要考虑的因素，建筑材料的声学特性，以及墙壁和地板的覆盖物。
That brings me to another variable we need to consider, the acoustic characteristics of the building materials as well as the wall and floor coverings.
这就引出了另一个我们需要考虑的变量——建筑材料、墙壁及地板覆盖物的声学性质。
That brings me to another variable we need to consider—the acoustic characteristics of the building materials as well as the wall and floor coverings.
其实是一位材料学家发现了一种处理木材的方法，使其处理后的声学性质与克雷莫纳木材非常相似。
What happened was a material scientist figured out a way to process wood to make it acoustically similar to the Cremonese wood.
声学纤维和电信传统光学纤维的选材方法非常相近，都是在加热状态下从大量的雏形材料中选取出来的。
They are drawn from a much larger "preform" block of the material when heated, in much the same way that conventional optical fibres used in telecommunications are created.
但是对于一些有低频振动的材料，如声学振动。
But for materials where you have vibrations, acoustic vibrations, those are low frequency.
法国的杰出研究领域有：推进与燃料、复合材料、空气动力学、声学、嵌入电子与信息系统等。
Sectors in which French research excels include: propulsion and combustion, composite materials, aerodynamics, acoustics, embedded electronic and it systems.
以舰艇声纳导流罩为研究工程背景，本文的主要研究工作是对健康完整和含层间分层损伤复合材料结构的振动特性和声学特性的分析探讨上。
Aiming at the sonar dome in submarines, this thesis mainly addresses the vibration and acoustic characteristics of intact and delamination-damaged structures of composite materials.
声子晶体是一种新型的声学功能材料，对声子晶体的研究引起了国内外研究机构的高度关注。
Phononic crystals was a novel type of acoustic functional materials, which was being widely studied by many research institution all over the world.
最重要的声学特性是隔音或吸音材料的质量。
The most important acoustical property is the sound insulating or absorbing quality of the material.
水声工程中，改善和提高自由场材料声学测试精度和可靠程度对水下航行器的声隐身设计具有非常重要的工程应用价值和现实意义。
In underwater acoustic engineering, improving precision of acoustic measurement for materials in free-field is very important in design of acoustic stealthy of underwater vehicle.
吸声材料的吸声特性及其在室内的位置布置是室内声学研究的一个非常重要的部分，目前多是在实验室中进行测量研究。
The absorption properties of sound-absorbing material and its location in the room is a very important part of room acoustics study. The study methods are measured in the laboratory.
提出了一种实用的声学法测量复合材料弹性常数的方法。
A test method of velocity measurement for elastic constants of composite material is proposed.
而且随着声学吸收材料厚度的增加，气体非稳定爆轰波强度衰减幅度增大。
It was also found that the detonation strengths decrease with increase in the thickness of acoustic absorbing layer.
目的用PLLA - PEG - plla共聚物为外壳材料制备微泡造影剂，建立体外声学性质测定装置和方法。
Objective To prepare an ultrasound microbubble contrast agent using PLLA-PEG-PLLA copolymer as the shell material, and test their acoustic characteristics in vitro.
介绍了一种基于微结构的声学模型，可用来对多孔材料的微组织结构进行优化，从而使多孔材料具备最佳的声学性能。
A microstructure based acoustic model is introduced, which can be used to optimize the microstructure of cellular materials and thus to obtain their optimal acoustic property.
目前，评价仿组织超声体模的主要方法是通过测量制备体模的仿组织材料声学参数是否符合人体组织的声学参数范围。
At present, the way to evaluate the phantom is that acoustic parameters of tissue mimicking material are detected and judged to agree with acoustic parameters of body.
吸声与隔声是材料的声学特性，吸声与隔声测量对噪声控制与声学设计具有重要意义。
Sound absorption and insulation is the acoustical characteristic of material. Measurement of sound absorption and insulation has an important significance in noise control and acoustical design.
吸声与隔声是材料的声学特性，吸声与隔声测量对噪声控制与声学设计具有重要意义。
Sound absorption and insulation is the acoustical characteristic of material. Measurement of sound absorption and insulation has an important significance in noise control and acoustical design.
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