Positive Modulation(正调制), 此释义来源于网络辞典。
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... angle modulation 调角,相角灯,角调制... positive modulation 正极性调制,正极性灯... compound modulation 多重调制 ...
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...,-) 则表示正(负)的频率域系數以正(负) 的浮水印值改变，嵌入后会使的系數之绝对值变大，称之为正调变(PM，positive modulation)。
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positive frequency modulation 正调频
positive light modulation [电子] 正光调制
positive amplitude modulation [电子] 正极性幅度调制
positive picture modulation 正象调制
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In high enough doses, it seems to have a positive effect on nervous system modulation, but the small amount in energy drinks likely does nothing.
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