1) acoustic impedance matching of middle ear
中耳声阻抗匹配
2) Acoustic impedance matching
声阻抗匹配
1.
It is concluded that the acoustic impedance matching criteria are of great value in layer thickness measurement using ultrasonic interferometry.
针对超声干涉法测量薄层厚度的原理,讨论了薄层及与其相邻介质声阻抗匹配分别满足界面声压反射系数|R1|<1/2或|R1|>1/2时回波信号的选取原则,并以薄层声压反射系数谱为依据,分析了上述两种声阻抗匹配条件下谱线分别出现次生极大或极小值的规律,在此基础上提出了薄层厚度测量时谱线极值的选择方法。
3) aural acoustic impedance
耳声阻抗
1.
As an objective diagnostic method, aural acoustic impedance measuring device holds a very important position in diagnosing ear diseases and hearing obstacles.
作为一种客观的诊断方法 ,耳声阻抗测量仪在临床耳疾和听力障碍诊断方面具有重要地位。
4) impedance matching
阻抗匹配
1.
The design of impedance matching transformer of ultrasonic motor;
超声电机阻抗匹配变压器的设计
2.
A Practical Impedance Matching Method;
一种实用的阻抗匹配方法
3.
Research of the impedance matching in the RF Power for the CO_2 Lasers;
射频电源中的阻抗匹配研究
5) Impedance-match
阻抗匹配
1.
The design of impedance-match is a key problem in the design of slotted-waveguide array antenna,mainly including the impedance-match of both radiating slot and coupled slot.
阻抗匹配设计是平板裂缝天线设计中需要重点考虑的问题,主要包含辐射缝和耦合缝两部分的阻抗匹配。
6) impedance-matching
阻抗匹配
1.
This paper gives a method to evaluate the quality of the impedance-matching experiments by the relation between standard and unknown materials shock wave velocities.
介绍了用标准材料与待测材料的冲击波速度的关系评价阻抗匹配实验质量的一种方法。
2.
Considering the unsymmetrical characteristic of the ABC threephase constructure of the impedance-matching balance transformer and adopting the phase components method, the short-circuit calculation formulae of three-phase and two-phase sidesare deduced in the paper when all kinds of practical short-circuit failure appear at thetraction busbar side.
本文根据阻抗匹配平衡变压器ＡＢＣ三相结构不对称的特点，采用相分量法推导了当牵引负荷母线侧出现各种短路故障时，三相侧与二相侧的短路电流计算公式，实测结果证明了计算公式的正确性。
3.
I have studied the impedance-matching of RF transmission line between the antenna and the GPS module.
重点分析介绍研究了GPS天线到接收模块GPS信号输入端之间射频传输线的阻抗匹配问题。
补充资料：声阻抗匹配
声阻抗匹配
物理学术语。声负载阻抗与声源内阻抗互相适配以获得最大输出声功率的现象。如在超声发射时，发射换能器的声源内阻抗等于传声介质的声负载阻抗时，就能获得最大功率输出。通常用单层或多层的四分之一波长声阻抗匹配层来完成。将此匹配层加于换能器表面与声负载介质之间，并使其声特性阻抗为后二者声特性阻抗的几何平均值，就能实现声阻抗的匹配。这时入射波投射在界面上而无反射波返回。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条