However, the couplingfactors then used were crude extracts or extracts after partial purification only.
但所用的偶联因子是粗提物或部分提纯的制备物。
2
To facilitate the application of the higher overtone ratio method, a contrast table between the higher overtone ratio and the electromechanical couplingfactors 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
To overcome the shortcoming of the traditional overtone ratio method, a higher overtone ratio method to determine the thickness vibration electromechanical couplingfactors was presented.