Electrical equipment for explosive atmospheres. 2013.
Vapour density — is the density of a vapour in relation to that of hydrogen. May be defined as mass of a certain volume of a substance divided by mass of same volume of hydrogen.vapour density = mass of n molecules of gas / mass of n molecules of hydrogen by… … Wikipedia
vapour — n. & v. (US vapor) n. 1 moisture or another substance diffused or suspended in air, e.g. mist or smoke. 2 Physics a gaseous form of a normally liquid or solid substance (cf. GAS). 3 a medicinal agent for inhaling. 4 (in pl.) archaic a state of… … Useful english dictionary
gas — gasless, adj. /gas/, n., pl. gases, v., gassed, gassing. n. 1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. 2. any such fluid or mixture of fluids. 3. any… … Universalium
vapour density — noun the density of a gas relative to the density of hydrogen • Syn: ↑vapor density • Hypernyms: ↑relative density * * * vapour density noun The density of a gas or vapour relative to that of hydrogen at the same temperature and pressure • • •… … Useful english dictionary
vapour — Vapor Va por, n. [OE. vapour, OF. vapour, vapor, vapeur, F. vapeur, L. vapor; probably for cvapor, and akin to Gr. ? smoke, ? to breathe forth, Lith. kvepti to breathe, smell, Russ. kopote fine soot. Cf. {Vapid}.] [Written also {vapour}.] [1913… … The Collaborative International Dictionary of English
vapour density — noun Chemistry the density of a particular gas or vapour relative to that of hydrogen at the same pressure and temperature … English new terms dictionary
Liquefied petroleum gas — (also called LPG, GPL, LP Gas, or liquid propane gas) is a flammable mixture of hydrocarbon gases used as a fuel in heating appliances and vehicles. It is increasingly used as an aerosol propellant and a refrigerant, replacing chlorofluorocarbons … Wikipedia
Vapor density — Vapor Va por, n. [OE. vapour, OF. vapour, vapor, vapeur, F. vapeur, L. vapor; probably for cvapor, and akin to Gr. ? smoke, ? to breathe forth, Lith. kvepti to breathe, smell, Russ. kopote fine soot. Cf. {Vapid}.] [Written also {vapour}.] [1913… … The Collaborative International Dictionary of English
Liquefied natural gas — Not to be confused with Natural Gas Liquids (NGL). Liquefied natural gas or LNG is natural gas (primarily methane, CH4) that has been converted to liquid form for ease of storage or transport. Liquefied natural gas takes up about 1/600th the… … Wikipedia
vapor density — noun the density of a gas relative to the density of hydrogen • Syn: ↑vapour density • Hypernyms: ↑relative density … Useful english dictionary
относительная плотность газа относительная плотность пара — relative density of a gas, relative density of a vapour Отношение плотности газа или пара к плотности воздуха при одинаковых значениях давления и температуры (плотность воздуха равна 1,0) … Электротехнический словарь
