friction
71friction match — ☆ friction match n. a match that lights by friction: includes all modern matches …
72friction coupling — friction clutch or friction coupling, a device for transmitting motion by frictional contact. It is used where it is desirable to engage or disengage moving parts gradually and smoothly, as when shifting gears …
73Friction motors — are simple mechanism to propel toy cars. The motor consists of a large flywheel which is connected to the drive wheels of the car via a very low gear ratio. The flywheel s axis is perpendicular to the direction the car is facing. When the car is… …
74Friction material — Friction material. См. Фрикционный материал. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …
75Friction welding — Friction welding. См. Сварка трением. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …
76friction murmur — friction rub a scratching sound, heard over the heart with the aid of the stethoscope, in patients who have pericarditis. It results from the two inflamed layers of the pericardium rubbing together during activity of the heart …
77friction rub — friction murmur …
78friction clutch — n. a mechanical clutch in which the rotating coaxial shafts are engaged through frictional contact of their surfaces …
79friction tape — n. a moisture resistant adhesive tape, esp. for insulating exposed electrical wires …
80Friction drum — A friction drum is a musical instrument found in various forms in Africa, Asia, Europe and South America. In Europe it emerged in the 16th century and was associated with specific religious and ceremonious occasions.ConstructionA friction drum is …
