1.
Theory model and numerical analysis of acoustic damping using the piezoelectric multi-layer
压电多层消声材料声特性理论模型和数值分析
2.
1 Drawer fronts are at least 3/4 inch thick with double wall construction, painted prior to assembly and sound deadened.
抽屉面板有3/4英寸厚，两层结构。装配前各面喷涂完毕，抽屉内有消声材料。
3.
Drawer fronts are at least3/4 inch thick with double wall construction, painted prior to assembly and sound deadened.
抽屉面板有3/英寸厚，两层结构。装配前各面喷涂完毕，抽屉内有消声材料。
4.
silencer(sound deadener)
噪音消声器（隔音材料）
5.
sound - absorbing material and sound - absorbingconstruction
吸声材料和吸声结构
6.
Another approach is to use more effective sound-deadening insulation arround the engine compartment.
另一个办法是在发动机室的周围采用高效消声隔音材料。
7.
According to the function mechanisms, polymeric noise reduction composites were classified as vibration damping, sound absorption and sound insulation materials.
降噪材料按降噪机理可分为阻尼减振材料、声材料和隔声材料。
8.
Material used for soundproofing.
消音材料用于隔音的材料
9.
material usage price variance
原材料消费价格差异
10.
Performance of Sound-Absorbing Material Based on Flow Resistivity
基于流阻率的吸声材料声学性能研究
11.
Quality Controls of Decoration Construction of Acoustic Noise Material
隔声吸声材料的装饰施工与质量控制
12.
In this paper, the recent development of research and application of low-noise railway wheels including resilient wheel, noise elimination wheel, acoustic optimized wheel and composite wheel are reviewed.
文章对包括弹性车轮、消声车轮、学优化车轮和复合材料车轮研究和应用的最新进展进行了总结。
13.
13.6 The mud materials consumption of this interval were listed in here.
本井段的泥浆材料消耗情况列在这里。
14.
(iii) materials consumed in the production of the imported goods;
(ⅲ)在生产进口货物过程中消耗的材料；
15.
non-sterile suture material of catgut or kangaroo tendo
缝合材料,未消毒的,羊肠线或袋鼠腱制
16.
a useless consumption of material.
对材料的毫无价值的消费。
17.
Exploration and Practice of the Purchase of Experiment Consumable in Public Bidding Way
实验消耗材料招标采购的探索与实践
18.
Material Consumptive Quota Calculation Management Subsystem in PDM;
PDM中的材料消耗定额计算管理子系统