1.
Acoustics--Measurement method of insertion loss and echo reduction for the underwater acoustical material sample
GB/T14369-1993声学水声材料样品插入损失和回声降低的测量方法
2.
Measurement of the longitudinal wave velocity and attenuation for underwater acoustical materials--Pulse-tube method
GB/T5266-1985水声材料纵波声速和衰减的测量脉冲管法
3.
Improvement and experiments of traveling wave tube measurement system for low-frequency properties of underwater acoustic materials
水声材料低频声性能行波管测量系统的改进及实验
4.
Uncertainty analysis of traveling wave tube measurement method for low-frequency properties of underwater acoustic materials
水声材料低频声性能测量行波管法的测量不确定度分析
5.
Research on the Measurement of Reflection Coefficients at Oblique Incidence for Stealth Material Used on Underwater Weapons;
水中兵器声隐身材料全向声反射系数测量研究
6.
Research Progress of Piezoelectric Composites for Ultrasound and Underwater Transducers
超声和水声用压电复合材料的研究进展
7.
Discussion on System of Polyurethane Underwater Anechoic Material and Research Progress in Polyurethane Anechoic Structure
聚氨酯水声吸声材料的体系探讨及其吸声结构的研究进展
8.
sound - absorbing material and sound - absorbingconstruction
吸声材料和吸声结构
9.
Inside wall of pump chamber is adhibited with sound absorption material, equipped with double layer sound isolation door.
水泵房等房间内壁贴吸声材料。采用双层隔音门。
10.
Research on 1-3 Series Piezoelectric Composite and Underwater Transducer;
1-3系压电复合材料及水声换能器研究
11.
Synthesis and Characterization of Several One-dimensional Nanomaterials Prepared by Ultrasonic Hydration Method
几种一维纳米材料的超声水合法合成与表征
12.
Underwater Piston Sound Source Based on Gaint Magnetostrictive Material
基于超磁致伸缩材料的活塞式水下声源
13.
Underwater Acoustic Properties of Epoxy Resin-Glass Microspheres Porous Composites
环氧树脂-玻璃微珠多孔复合材料的水声性能
14.
The Acoustics Design on the Underwater Composite Shell Structure
水介质中复合材料壳板结构的声学设计
15.
Application of ultrasound for preparation of carbon fiber cement-based composites
超声波在碳纤维水泥基材料制备中的应用研究
16.
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。
17.
silencer(sound deadener)
噪音消声器（隔音材料）
18.
An object made of a soft, pliable material, such as cotton or rubber, and fitted into the ear canal to block the entry of water or sound.
耳塞一种由柔软而灵便的材料制成的东西，如棉、橡胶等材料，以嵌入耳道挡住水或声音的进入