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Four rail system
| Глоссарий в железнодорожной технике |
A now almost unique current collection system used by london underground which has separate positive and negative current rails. the same system was used by the lnwr and the mersey railway at one time. the usual 3-rail method of connecting return current via the running rails is replaced by a fully insulated system using separate positive and negative rails. originally used to reduce the risk of stray currents causing damage to nearby utilities and structures through electrolysis. has the disadvantage of requiring special fault detection as earth faults do not cause current to automatically switch off. see conductor rail.
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Collection, английский
- The accumulation of precipitation into surface and underground areas, including lakes, rivers, and aquifers.
- Прием средств, инкассо, сбор задолженности по кредитам
- Сбор; собирание; коллекция
- A container for organizing clips.
- A customer’s assemblage of digital media, including music, videos, pictures, games, and apps.
- A set of resources in the configuration manager hierarchy.
- A set of thematically related apps, games, music tracks, videos, or other items available for purchase or download in the store. a thematic group of editorially chosen apps and games for merchandising or marketing purposes.
- A type of specialized class in the .net framework for data storage and retrieval. these classes provide support for stacks, queues, lists, and hash tables. most collection classes implement the same interfaces, and these interfaces may be inherited to create new collection classes that fit more specialized data storage needs.
- An export format that maintains a group of images that is generated at export.
- An object that contains a set of related objects. an object’s position in the collection can change whenever a change occurs in the collection; therefore, the position of any specific object in a collection may vary.
- Automatic grouping of user’s photos and videos based on time and place.
- The presentation of a negotiable instrument for payment, or the conversion of any accounts receivable into cash.
- Экзамены в конце семестра в оксфорде
- Инкассо
Underground, английский
- Подземный
- Below grade or ground level, as underground drain lines or cables.
Connecting, английский
Связывающий; соединяющий
Originally, английский
Первоначально
Electrolysis, английский
- The decomposition of a chemical compound into its constituent parts by the passage of an electric current; this action leads to the decomposition of metals.
- The destruction of tissue such as unwanted hair by applying an electric current
- A chemical reaction caused by the passage of electricity from one electrode to another.
Disadvantage, английский
Недостаток; неудобство
Automatically, английский
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Motor car, английский
A passenger vehicle in a multiple unit train which is provided with traction power equipment.
Push-out, английский
A method of rescuing a failed train by using the following train or locomotive to push it to a depot or siding. requires careful management and good training of crews if what is already a long delay is not to be made worse.
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