...率（rate power）200W，频率响应（frequency response）45Hz-19KHz，灵敏度（sensitivity）：100dB，额定阻抗（rate impedance）8ω,尺寸（dimension）：300/490*440*830。 PVC贴皮, 半网.
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Then the design methods of the parallel coupling SIR band-pass filter has been discussed, and analysed the different characteristic of the SIR resonator with the different impedance rate.
之后，用SIR的原理讨论了平行耦合带通sir滤波器的设计方法，并分析了不同阻抗比的SIR滤波器之间特性。
A method of combining AC impedance and weak polarization technology to measure corrosion rate of metals is presented. Based on this method, an instrument, CMB-4510, has been developed.
提出了交流阻抗和弱极化技术相结合的腐蚀速度测量的方法，并依此研制了CMB - 4510腐蚀速度测量仪。
It use special chip to realize full-range and equal observations for different voltage rate, without additional insulation faults for high input impedance .
本装置采用专用芯片，实现多种电压等级全范围等精度测量，同时输入阻抗高，不影响原车的绝缘状况；
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