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switch hook造句

"switch hook"是什么意思  
造句與例句手機(jī)版
  • Some phones only have a mechanical means of switch hook operation.
  • In the United Kingdom, it used to be possible to make calls from coin-box phones ( payphones ) by tapping the switch hook without depositing coins.
  • By contrast, on a regular phone, the caller has to either type in a multi-digit code or toggle the switch hook that hangs up the phone.
  • Technology from decades ago eliminated the need for such device, however many phones, including modern IP phones, still do not have discrete circuitry for switch hook operation.
  • Either party could " flash " the operator's supervision lamps by depressing their switch hook for a second and releasing it, in case they needed assistance with a problem.
  • In order to make or answer a telephone call, the user lifted the receiver off the switch hook, thereby activating an internal switch connecting the telephone to the telephone line.
  • At the top of the stand was mounted a carbon microphone ( " transmitter " ) to speak into, and a switch hook extending sideways upon which an ear piece ( " receiver " ) was hung.
  • Both were based around the same handmade, wooden case, containing the telephone circuit and bell, but unlike the bellset, shown with the Tele 150, below, the Tele 121 had the transmitter mouthpiece screwed onto the front of the box and the switch hook, holding the receiver, protruding from the left hand side.
  • It's difficult to see switch hook in a sentence. 用switch hook造句挺難的
如何用switch hook造句,用switch hook造句switch hook in a sentence, 用switch hook造句和switch hook的例句由查查漢語詞典提供,版權(quán)所有違者必究。