“mark-to-space ratio”的概念、定义、翻译、参考文献-科学参考

单词	mark-to-space ratio
释义	mark-to-space ratio [¦märk ¦tǝ ¦spās `rā·shō] ^ELECTRONICS The ratio of the duration of the positive-amplitude part of a square wave to that of the negative-amplitude part. Also known as mark-space ratio.
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