| 单词 | two-tone modulation |
| 释义 | two-tone modulation [`tü ¦tōn ´mäj·ǝ`lā·shǝn] COMMUNICATIONS In teletypewriter operation, a method of modulation in which two different carrier frequencies are employed for the two signaling conditions; the transition from one frequency to the other is abrupt, with resultant phase discontinuities. |
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