由此导出了半波电压随外界磁场变化的数学模型。

The maths model about the variance that the half-wave voltage varies with the magnetic induction outside is set up.

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这种装置具有半波电压低，电反馈功率小等特点。

This device base such advantages that the half-wave voltage is lower and the electric feedback power is smaller.

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文中还阐明了这种包层调制有助于降低器件的半波电压。

In the thesis it is also illustrated that the way of modulation in claddings helps to decrease the half-wave voltage of modulators.

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