而压电性能表明在不同方向的机电耦合系数均比石英晶体相应参数大得多。
The piezoelectric property indicates that the electromechanical coupling coefficients in the different directions are much larger than the corresponding parameter of quartz crystal.
为了便于高次泛音比法的应用，提供了高次泛音比和机电耦合系数的对应表。
To facilitate the application of the higher overtone ratio method, a contrast table between the higher overtone ratio and the electromechanical coupling factors was provided.
研究了它们的介电常数，热电系数，厚度伸缩振动机电耦合系数及其温度依赖性。
The dielectric constant, pyroelectric coefficient, thickness extension vibration electromechanical coupling factor and their temperature dependence are investigated.
单晶的压电性能测试结果为：平面和厚度机电耦合系数分别为0.69、0.49；
The piezoelectric properties of single crystals as below: piezoelectric coupling coefficient k_p(k_t) are 0.69(0.49);
为了克服传统泛音比法的这一弊端，提出了测定压电振子厚度振动机电耦合系数的高次泛音比法。
To overcome the shortcoming of the traditional overtone ratio method, a higher overtone ratio method to determine the thickness vibration electromechanical coupling factors was presented.
大功率压电陶瓷要求材料不但在强场下有小的介质损耗，大的机械品质因数，同时兼备一定的压电常数和机电耦合系数。
High-power piezoelectric ceramics are desirable to combine a high mechanical quality factor(Qm) with a high piezoelectric constant(d 33) and a high planar coupling factor(Kp).
这种具有晶粒定向结构的BT S极性微晶玻璃，具有较高的机电耦合系数和低的延迟温度系数，在声表面波器件上具有潜在的应用价值。
It shows that BTS polar glass ceramics with grain orientation structure have a potential application in SAW devices for their high SAW coupling coefficient and low temperature coefficient of delay.
这种具有晶粒定向结构的BT S极性微晶玻璃，具有较高的机电耦合系数和低的延迟温度系数，在声表面波器件上具有潜在的应用价值。
It shows that BTS polar glass ceramics with grain orientation structure have a potential application in SAW devices for their high SAW coupling coefficient and low temperature coefficient of delay.
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