The singing methods. are diversification such as the vertical overlap of different singing methods.

演唱方法上的多样化，如，不同唱法上的纵向重叠。

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By separating the vertical and the horizontal polarization, the device can overlap those images to produce an accurate fingerprint, which is fed to a computer for verification.

通过分离横向偏振和纵向偏振，将其叠加生成一幅更准确的指纹图，将此作为计算机处理认证的输入。

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