Results: 16 cases intracavity type show with round or half-round filling defect on X-ray image, 8 cases extra cavitytype with light press partly in barium meal examine.
The equivalent circuit of the three-gap coupled cavitytype output section is given, with which resonant frequency of resonant modes and gap impedance matrix are calculated.
给出了三间隙耦合腔输出回路的等效电路,利用等效电路确定了谐振频率及间隙阻抗矩阵。
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With the help of simulation, the optimally designed resonant cavitytype wetness sensor has acquired good high-frequency electromagnetic as well aerodynamic characteristics.