The bogie is an important part of a vehicle, its structure effects the passenger cars performance.
转向架是旅客列车的重要部件之一，其结构是否合理直接影响整车的性能。
Impedance bandwidths of the antennas were broadened by adopting step-by-step transition feeding structure. Effects of varying the slot size on VSWR have been analyzed.
采用阶梯式过渡微带拓宽了天线的阻抗带宽，分析了开槽大小对天线驻波的影响。
Impedance bandwidths of the antennas were broadened by adopting step-by-step transition feeding structure. Effects of varying the slot size on VSWR have been analyzed.
采用阶梯式过渡微带拓宽了天线的阻抗带宽，分析了开槽大小对天线驻波的影响。
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