- 1. Электрические провода, помещенные в стеклянные или керамические трубки для получения лучистой теплоты. 2. Контактные приспособления, расположенные в стенных пазухах на глубине, достаточной для размещения змеевиков сопротивления, а иногда и вентиляторов. Примечание. Этот термин может использоваться также применительно к газовым нагревателям.
Англо-русский словарь по кондиционированию и вентиляции. 2013.
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