查询词典 acoustic coupler

The processes and the key techniques of the null coupler and acoustic transducers are described and analyzed in detail.

第三部分是光纤声光耦合器和光纤环形器构成的新型OADM 的实验研究。

When the distant computer answers with a higher pitched "carrier tone," you place the telephone handset in the acoustic coupler and transmit and receive data.

当远端计算机发出一个更高音调的"载波音"作为应答时，你将电话听筒放在声音耦合器上并开始发送和接收数据。

To work the acoustic coupler, start the computer's communications program, dial the distant computer on a single line telephone with a normal e.g.

使用声音耦合器时，首先启动计算机通信程序，然后再拨打远端计算机。

With coupler embedded and acceleration sensitivity compensation design, the structure symmetry is insured, which can induce the acceleration sensitivity effectively. The acceleration sensitivity compensation design also improves the production efficiency of FOH for towed linear array application.2. A good theoretical simulation platform, utilizing the method of elastic mechanics and the finite element method, is established, which can provide an effect predictive design for FOH. The experimental results are in good agreement with the theoretical analysises.3. Some key technology problems in the making of FOH for towed linear array application are conquered. The new developed FOH, with an acoustic sensitivity of -143.0dB, has acceleration sensitivity less than -30dB, which exceeded to results from other international reports.

本论文的主要成果和创新在于：1、提出了耦合器内嵌、带加速度灵敏度微调补偿的低加速度灵敏度光纤水听器结构，最大程度保证了工艺结构的对称性，实现了对工艺误差的有效补偿，提高了低加速度灵敏度光纤水听器研制的成品率。2、采用弹性力学和有限元方法建立了拖曳线列阵光纤水听器理论设计平台，实验与理论分析结果相一致，这为优化光纤水听器的结构设计提供了有效的技术手段。3、解决了拖曳线列阵用光纤水听器制造的关键技术问题，研制出声压灵敏度为-143.0dB，加速度灵敏度低于-30dB的拖曳线列阵用光纤水听器，其加速度灵敏度优于国际上已报导的结果，并在国防水声一级计量站对其进行了性能指标测试(来源：A14BC论文网www.abclunwen.com)。

Part 2 : an interim acoustic coupler for the calibration of audiometric earphones in the extended high-frequency range.

第2部分：在扩展高频范围内测声耳机校准的间歇声音耦合器欧洲标准EN60318-2

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。