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.
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。
2
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.
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。
3
This article has analysed the overtone source of the paraphrase controlled thyristor device to carry, pointed out the harmfulness, and proposed the corresponding overtone government method.