“line-drop signal”的概念、定义、翻译、参考文献-科学参考

单词	line-drop signal
释义	line-drop signal [`līn ¦dräp ´sig·nǝl] ^{COMMUNICATIONS} Signal associated with a subscriber line on a manual switchboard.
随便看	sperm whale Sperner set speromagnetic state sperrylite Sperry process spessartite sp gr Sphaeractinoidea Sphaeriales Sphaeriidae Sphaerioidaceae sphaerite Sphaerocarpales Sphaeroceridae Sphaerodoridae Sphaerolaimidae sphaerolitic Sphaeromatidae Sphaerophoraceae Sphaeropleineae Sphaeropsidaceae Sphaeropsidales Sphagnaceae Sphagnales Sphagnobrya

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