contraction du métal

См. также в других словарях:

• contraction — con|trac|tion [kənˈtrækʃən] n 1.) medical a very strong and painful movement of a muscle, especially the muscles around the ↑womb during birth 2.) [U] the process of becoming smaller or narrower ▪ the contraction of metal as it cools 3.) a… …   Dictionary of contemporary English

• contraction — noun 1 (C) technical a very strong and painful movement of a muscle, especially of the muscles around the womb during the process of birth 2 (U) the process of becoming smaller or narrower: the contraction of metal as it cools 3 (C) a shortened… …   Longman dictionary of contemporary English

• contraction — [ kɔ̃traksjɔ̃ ] n. f. • XVe; contraicion 1256; lat. contractio, de contrahere → 2. contracter 1 ♦ Vx Diminution du volume d un corps, sans modification de sa masse. Contraction par le froid, la pression. ♢ Mod. Physiol. Diminution de volume ou de …   Encyclopédie Universelle

• Metal bellows — are elastic vessels that can be compressed when pressure is applied to the outside of the vessel, or extended under vacuum. When the pressure or vacuum is released, the bellows will return to its original shape (provided the material has not been …   Wikipedia

• Metal ions in aqueous solution — A metal ion in aqueous solution is a cation, dissolved in water, of chemical formula [M(H2O)n]z+. The solvation number, n, determined by a variety of experimental methods is 4 for Li+ and Be2+ and 6 for elements in rows 3 and 4 of the periodic… …   Wikipedia

• contraction */ — UK [kənˈtrækʃ(ə)n] / US noun Word forms contraction : singular contraction plural contractions 1) [countable] medical a movement of a muscle in which it becomes tighter, especially the strong painful movement of the muscles of a woman s womb that …   English dictionary

• Metal–ligand multiple bond — In Chemistry, a metal–ligand multiple bond describes the interaction of certain ligands with a metal with a bond order greater than one.[1] Coordination complexes featuring multiply bonded ligands are of both scholarly and practical interest.… …   Wikipedia

• Metal ligand multiple bond — In Chemistry, ametal ligand multiple bond describes the interaction of certain ligands with a metal with a bond order greater than one. [ Metal Ligand Multiple Bonds: The Chemistry of Transition Metal Complexes Containing Oxo, Nitrido, Imido,… …   Wikipedia

• contraction — con|trac|tion [ kən trækʃən ] noun * 1. ) uncount the process of becoming smaller: the contraction of cooling metal There is likely to be further contraction of the dot com sector as more firms go bankrupt. 2. ) count MEDICAL a movement of a… …   Usage of the words and phrases in modern English

• contraction rule — noun : a patternmaker s rule in which the divisions are made larger ( 1/96 for iron, 1/64 for brass) than standard measures to allow for contraction during cooling of the metal being cast …   Useful english dictionary

• Lanthanide contraction — is a term used in chemistry to describe different but closely related concepts associated with smaller than expected ionic radii of the elements in the lanthanide series (atomic number 58, Cerium to 71, Lutetium).CauseVery simply, the effect… …   Wikipedia