A generalized equivalent circuit model was developed for both single-tuned and double-tuned radio-frequency(RF) coils for Magnetic Resonance Imaging (MRI) systems.
为了解决磁共振成像系统中双调谐射频线圈的设计问题，提出了一个通用等效电路模型。
2
The different mechanical impedance of matching means provide the double-tuned resonance characteristic to the transducers.
具有不同机械阻抗匹配器，为换能器提供了双调谐的特性。
3
The double bass, usually considered a member of the violin family, is tuned in fourths and has the sloping shoulders and flat back characteristic of the viols.