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- adaptive active acoustic structure 有源声学结构
- Optimum Configuration Design for Active Acoustic Structure 有源声学结构系统配置优化设计
- In this thesis, the study is focused on the characteristics of distributed sound source and its using in the active acoustical structure as the secondary source, including the foll. 本文为有源声学结构研究的一部分，侧重于研究分布式声源的声学特性，并对其作为次级源在有源声学结构中的应用进行了深入的研究。
- active acoustic structure 有源声学结构
- According to acoustic structure theory base,acoustic principle of multi-holes acoustextile and nonwovens characteristics,nonwovens acoustic theory are analysed in the paper. 根据吸声结构理论基础以及多孔吸声材料的吸声机理,结合非织造布的结构特点,系统分析了非织造布的吸声原理。
- Transonic potential flow is an acoustic phenomenon in music, which opposites to traditional acoustic without melody and tempo.It includes the initial acoustic structure and technique parameters. 音流是20世纪音乐中相对于传统的无旋律无节拍的一种音响构成现象，它包含了最初创作思维的音响结构和实现这些结构的各种作曲技术参数。
- active acoustic detecting device 主动声探测仪
- Based on coupled acoustic structural modal analysis method, its application in vehicle interior noise control is studied, and corresponding experimental system is developed. 本文在介绍结构-声场耦合模态分析方法的原理基础上,研究了该方法在车内噪声测试分析与控制中的应用与工程实现,并开发出了相应的测试分析系统。
- Active Acoustic Radiation Control of Elastic Linkage Mechanisms 弹性连杆机构声辐射的主动控制
- Active Acoustic Signal Detection Based on Wavelet Transform 基于小波变换的舰船辐射噪声检测
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- Low-frequency active sonar has been proposed as a replacement for traditional high-frequency active sonar, and it can detect the target under water over long ranges using low-frequency active acoustics. 低频主动声纳是对传统的高频主动声纳的一种重大改进,它能利用低频主动声信号实现对水下目标的远距离探测。
- Design and improvement of the design of acoustic structure of TV receiver 电视机声学结构的设计和改进
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智？
- She was active as a left-winger in the party. 她是党内积极的左翼分子。
- He was very active and rode down several horses. 他劲头很大，一连骑了好几匹马。
- Opened the show with an acoustic set. 不用电子乐器开始演出
- She plays an active part in local politics. 她积极参与地方政治活动。
