fourth rail
fourth rail · fourth rails
An extra rail in addition to the third rail which is used for current return purposes,…An extra rail in addition to the third rail (live rail) which is used for current return purposes, mainly by London Underground, because of problems caused by using the running rails for current return underground.
Значение
значений: 1An extra rail in addition to the third rail (live rail) which is used for current return purposes, mainly by London Underground, because of problems caused by using the running rails for current return underground.
Формы
мн. число: fourth rails| Ед. число | fourth rail |
|---|---|
| Мн. число | fourth rails |
правильный