vacuum insulation
121Transformer types — Circuit symbols Transformer with two windings and iron core. Step down or step up transformer. The symbol shows which winding has more turns, but not usually the …
122integrated circuit — Electronics. a circuit of transistors, resistors, and capacitors constructed on a single semiconductor wafer or chip, in which the components are interconnected to perform a given function. Abbr.: IC Also called microcircuit. [1955 60] * * * ▪… …
123ГОСТ Р 54828-2011: Комплектные распределительные устройства в металлической оболочке с элегазовой изоляцией (КРУЭ) на номинальные напряжения 110 кВ и выше. Общие технические условия — Терминология ГОСТ Р 54828 2011: Комплектные распределительные устройства в металлической оболочке с элегазовой изоляцией (КРУЭ) на номинальные напряжения 110 кВ и выше. Общие технические условия оригинал документа: 3.1.23 IP код (IP code):… …
Словарь-справочник терминов нормативно-технической документации
124Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …
125Stretcher — A stretcher is a medical device used to carry casualties or an incapacitated person from one place to another. It is a simple type of litter, and still called by that name in some cases.A stretcher is usually carried by two people, one at the… …
126Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… …
127Housekeeping — For other uses, see Housekeeping (disambiguation). Broom, sponge and towel Housekeeping is the act of cleaning the rooms and furnishings of a home. It is one of the many chores included in the term housework. Housecleaning includes activities… …
128Flat roof — A flat roof is a type of covering of a building. In contrast to the sloped form of a roof, a flat roof is horizontal or nearly horizontal. Materials that cover flat roofs should allow the water to run off freely from a very slight… …