英语词汇off-hook signal是什么意思，off-hook signal的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	off-hook signal
释义	off-hook signal　【计】摘机信号
随便看	organic film condenser organic fluorescent paint organic food organic food organic forliage fungicide organic fraction organic functions organic glass organic group organic group organic headache organic herbicide organic impotence organic impurity organic insecticide organic insulation organic insulator organic intracavitary organic ion exchanger organic laser organic law organic law organic lesion organic liquid coolant organic load

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