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positive mechanical action

См. также в других словарях:

  • Positive electricity — Electricity E lec*tric i*ty ([=e] l[e^]k*tr[i^]s [i^]*t[y^]), n.; pl. {Electricities} ([=e] l[e^]k*tr[i^]s [i^]*t[i^]z). [Cf. F. [ e]lectricit[ e]. See {Electric}.] 1. (Physics) a property of certain of the fundamental particles of which matter… …   The Collaborative International Dictionary of English

  • action potential — n a momentary reversal in the potential difference across a plasma membrane (as of a nerve cell or muscle fiber) that occurs when a cell has been activated by a stimulus called also spike potential compare RESTING POTENTIAL see afterpotential …   Medical dictionary

  • Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… …   Wikipedia

  • Positive airway pressure — A typical CPAP machine houses the air pump in a case lined with sound absorbing material for quieter operation. A hose carries the pressurized air to a face mask or nasal pillow …   Wikipedia

  • Positive feedback — Alarm or panic can spread by positive feedback among a herd of animals to cause a stampede. Positive feedback is energy taken from the output of a system and reapplied to the input, which is phase congruent with the input signal. A system… …   Wikipedia

  • Differential (mechanical device) — For other uses, see Differential. A cutaway view of an automotive final drive unit which contains the differential Input …   Wikipedia

  • Belt (mechanical) — For other belts, see Belt (disambiguation). A pair of vee belts …   Wikipedia

  • Affirmative action in the United States — is intended to promote access to education, employment, or housing among certain designated groups (typically, minorities and women). The stated motivation for affirmative action policies is to redress the effects of past discrimination and to… …   Wikipedia

  • Hydraulic action — is a form of mechanical weathering caused by the force of moving water currents rushing into a crack in the rockface. The water compresses the air in the crack, pushing it right to the back. As the wave retreats, the highly pressurised air is… …   Wikipedia

  • Poppet valve — A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide. In most… …   Wikipedia

  • положительное механическое воздействие — [ГОСТ Р ИСО 12100 1:2007] 4.5 Применение принципа положительного механического воздействия одного элемента машины на другой Если один приводной механический элемент перемещает вместе с собой другой элемент в результате прямого контакта или через… …   Справочник технического переводчика

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