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Subject: true earth ground gen. Пожалуйста, помогите перевести выражение "true earth ground".Заранее спасибо |
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http://www.ese.upenn.edu/detkin/instruments/misctutorials/Ground/grd.html ... II The Concept of "Earth" Ground Early developers of electrical systems theorized that the earth was an electrically neutral body, i.e. an equal number of negative and positive charges are distributed throughout the earth at any given time. Being electrically neutral, earth is considered to be at zero potential and establishes a convenient reference frame for voltage measurements. Noting that voltmeters read only the difference in potential between two points, absolute measurements can be made by using earth as a reference. A true earth ground, as defined by the National Electrical Code, physically consists of a conductive pipe or rod driven into the earth to a minimum depth of 8 feet. "истинное" зазмеление, заземление в грунт и т.д. |
| если у вас электрический контекст, то так и надо говорить. если другой, то тоже. если контекста нет, то идите в словарь и берите что понравится. |
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