Based on the method of linear polarization, AC impedance and time potential, it is studied that the properties of seawater corrosion resistance of rebar in normal concrete and fly ash concrete.

应用线性极化法、交流阻抗法和时间电位法等电化学方法对普通混凝土和掺粉煤灰混凝土中钢筋耐海水侵蚀性能进行了研究。

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Compare to the normal rectangular waveguide, ridge waveguide has the character of broader bandwidth, smaller dimension, lower equivalent characteristic impedance, etc.

与普通矩形波导相比，脊波导具有工作频带宽、尺寸小、等效特性阻抗低等特点。

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Objective To determine the normal value of cardiac output measured by reconstructed impedance cardiogram.

目的探讨重建心阻抗图测定心排血量的正常值。

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