Traduction et analyse des mots par intelligence artificielle
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ring off - traduction vers grec
.jpg?width=200 "A typical form of the function of the wood ring (in accordance with the dendrochronological equation) with an increase in the width of wood ring at initial stage")
![''[[Pinus taeda]]'' cross section showing annual rings, [[Cheraw, South Carolina]]](https://commons.wikimedia.org/wiki/Special:FilePath/Pinus taeda crossx7358.JPG?width=200 "''[[Pinus taeda]]'' cross section showing annual rings, [[Cheraw, South Carolina]]")
![Diagram of [[secondary growth]] in a [[tree]] showing idealised vertical and horizontal sections. A new layer of [[wood]] is added in each growing season, thickening the stem, existing branches and roots, to form a growth ring.](https://commons.wikimedia.org/wiki/Special:FilePath/Tree secondary growth diagram.svg?width=200 "Diagram of [[secondary growth]] in a [[tree]] showing idealised vertical and horizontal sections. A new layer of [[wood]] is added in each growing season, thickening the stem, existing branches and roots, to form a growth ring.")
Définition
Wikipédia
In telephony, ringdown is a method of signaling an operator in which telephone ringing current is sent over the line to operate a lamp or cause the operation of a self-locking relay known as a drop.
Ringdown is used in manual operation, and is distinguished from automatic signaling by dialing a number. The signal consists of a continuous or pulsed alternating current (AC) signal transmitted over the line. It may be used with or without a telephone switchboard. The term originated in magneto telephone signaling in which cranking the magneto generator, either integrated into the telephone set or housed in a connected ringer box, would not only ring its bell but also cause a drop to fall down at the telephone exchange switchboard, marked with the number of the line to which the magneto telephone instrument was connected.
The last ringdown telephone exchange in the United States was located at Bryant Pond, Maine, had 400+ subscribers, and converted to dial service in October 1983.
