impedance level meaning in English

阻抗大小
阻抗位准

Second , since input bias currents are not always small and can exhibit different polarities , source impedance levels should be carefully matched to minimize additional input bias current - induced offset voltages and increased distortion
其次,因为输入偏置电流不一定都小,且可能体现不同的极性，而且源阻抗水平应该仔细地进行匹配，以将输入偏置电流引起额外失调电压和增加的畸变减到最小。
This becomes increasingly critical as systems are being designed to combine circuits operating at lower power ( implying higher impedance levels ) , higher speed ( implying lower nodal stray capacitance , faster edges , and higher frequencies ) , and higher resolution ( much less output noise permitted )
当今的电子系统常常包含着低功耗（意味着阻抗更高）、高速度（节点寄生电容更小、信号边沿更陡峭、信号频率更高）和高分辨力（噪声容限更小）等电路，因此这个问题尤其应该引起重视。