| 单词 | gas |
| 释义 | gas (once / 118 pages) 1nv 2v Matter can be found in solid, liquid, or gas form. The air you breathe in and the carbon dioxide you breathe out, are both examples of gas. Gasoline is a kind of a gas that you use as car fuel, and when people say they need gas, usually this is the kind they're talking about. They're probably not talking about the digestive kind of gas that causes you to fart. There are poisons that can be released as gas, and you might hear about riot police somewhere gassing people: spraying them with harmful gas. Gas has no fixed shape and changes density easily. WORD FAMILYgas: degas, gaseous, gases, gasify, gasing, gassed, gasses, gassing, gassy+/degas: degases, degassing/gaseous: gaseously, gaseousness/gasify: gasification, gasified, gasifies, gasifying/gassing: gassings/gassy: gassier, gassily USAGE EXAMPLESOther approaches focus on netting drones, either via bigger drones or by guns firing a net and a parachute via compressed gas. Reuters(Jan 02, 2017) It was also the first time poison gas was used on the Western front. BBC(Jan 02, 2017) Four minors died from chemical gas poisoning after a resident tried to fumigate a home in Amarillo, Texas with pesticide, fire officials told local media. Reuters(Jan 02, 2017) 1 1n the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container Syn|Hyper gaseous state state, state of matter (chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container) 2n a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely Hypo|Hyper atmosphere the envelope of gases surrounding any celestial body argonon, inert gas, noble gasany of the chemically inert gaseous elements of the helium group in the periodic table Cl, atomic number 17, chlorinea common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water) F, atomic number 9, fluorinea nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite H, atomic number 1, hydrogena nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe N, atomic number 7, nitrogena common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues O, atomic number 8, oxygena nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust butaneoccurs in natural gas; used in the manufacture of rubber and fuels propanecolorless gas found in natural gas and petroleum; used as a fuel afterdampa toxic mixture of gases (including carbon dioxide and carbon monoxide and nitrogen) after an explosion of firedamp in a mine firedampa mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air arsinea poisonous colorless flammable gas used in organic synthesis and to dope transistors and as a poison gas in warfare nitrogen dioxidea highly poisonous brown gas (NO2) nitric oxidea poisonous red-brown gas (NO) blow gas, blowing gasthe gas leaving a generator during a blow period butene, butyleneany of three isomeric hydrocarbons C4H8; all used in making synthetic rubbers cyanogena colorless toxic gas with a pungent almond odor; has been used in chemical warfare exhaust, exhaust fumes, fumesgases ejected from an engine as waste products aira mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of compressed gasgas at a high pressure that can be used as a propellant ethene, ethylenea flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic air gas, producer gasa gas made of carbon monoxide and hydrogen and nitrogen; made by passing air over hot coke formaldehyde, methanala colorless poisonous gas; made by the oxidation of methanol greenhouse emission, greenhouse gasa gas that contributes to the greenhouse effect by absorbing infrared radiation bottled gas, liquefied petroleum gashydrocarbon gases, usually propane or butane, kept under pressure water gasa mixture of hydrogen and carbon monoxide with small amounts of other gases; made by blowing steam over hot coke or coal ideal gas, perfect gasa hypothetical gas with molecules of negligible size that exert no intermolecular forces inhalantsomething that is inhaled methanea colorless odorless gas used as a fuel ozonea colorless gas (O3) soluble in alkalis and cold water; a strong oxidizing agent; can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation) phosgenea colorless poisonous gas that smells like new-mown hay; used in chemical warfare phosphinea colorless gas with a strong fishy smell; used as a pesticide poison gasa gas that is poisonous to breath or contact; used in chemical warfare propene, propylenea flammable gas obtained by cracking petroleum; used in organic synthesis mephitisa poisonous or foul smelling gas emitted from the earth sewer gasfoul-smelling gas that forms in sewers sublimatethe product of vaporization of a solid sulfur dioxide, sulphur dioxidea colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain lachrymator, lacrimator, tear gas, teargasa gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds skythe atmosphere and outer space as viewed from the earth CFC, chlorofluorocarbona fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans CS gas, chlorobenzylidenemalononitrilea tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema CN gas, chloroacetophenonea tear gas that is weaker than CS gas but lasts longer tritiuma radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms Ar, argon, atomic number 18a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere radiochlorinea radioactive isotope of chlorine He, atomic number 2, heliuma very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas) Kr, atomic number 36, kryptona colorless element that is one of the six inert gasses; occurs in trace amounts in air Ne, atomic number 10, neona colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts azotean obsolete name for nitrogen LOX, liquid oxygena bluish translucent magnetic liquid obtained by compressing gaseous oxygen and then cooling it below its boiling point; used as an oxidizer in rocket propellants Rn, atomic number 86, radona radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health Xe, atomic number 54, xenona colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts isobutyleneused also in making gasoline components polybutene, polybutylenea polymer of butylene; used in lubricants and synthetic rubber CO2, carbon dioxide, carbonic acid gasa heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis nitrochloromethanegaseous form of chloropicrin used as tear gas breaththe air that is inhaled and exhaled in respiration hot airair that has been heated and tends to rise compressed airair at a pressure greater than that of the atmosphere TCE, trichloroethane, trichloroethylenea heavy colorless highly toxic liquid used as a solvent to clean electronic components and for dry cleaning and as a fumigant; causes cancer and liver and lung damage HFC, hydrofluorocarbona fluorocarbon emitted as a by-product of industrial manufacturing liquid nitrogennitrogen in a liquid state liquid airair in a liquid state marsh gasmethane gas produced when vegetation decomposes in water bichloride of mercury, corrosive sublimate, mercuric chloride, mercury chloridea white poisonous soluble crystalline sublimate of mercury; used as a pesticide or antiseptic or wood preservative blistering agent, dichloroethyl sulfide, mustard agent, mustard gas, sulfur mustarda toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs; there is no known antidote nerve agent, nerve gasa toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system PFC, perfluorocarbona powerful greenhouse gas emitted during the production of aluminum sulfur hexafluoride, sulphur hexafluoridea colorless gas that is soluble in alcohol and ether; a powerful greenhouse gas widely used in the electrical utility industry fluid continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas 3n a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines Syn|Hypo|Hyper gasolene, gasoline, petrol leaded gasoline, leaded petrol gasoline treated with a lead compound to reduce motor knocks napalmgasoline jelled with aluminum soaps; highly incendiary liquid used in fire bombs and flamethrowers unleaded gasoline, unleaded petrolgasoline that has not been treated with a lead compound fuel a substance that can be consumed to produce energy hydrocarbonan organic compound containing only carbon and hydrogen 4n a fossil fuel in the gaseous state; used for cooking and heating homes Syn|Hyper natural gas fossil fuel fuel consisting of the remains of organisms preserved in rocks in the earth's crust with high carbon and hydrogen content 5n a pedal that controls the throttle valve he stepped on the gas Syn|Hyper accelerator, accelerator pedal, gas pedal, gun, throttle foot lever, foot pedal, pedal, treadle a lever that is operated with the foot 6n a state of excessive gas in the alimentary canal Syn|Hyper flatulence, flatulency physical condition, physiological condition, physiological state the condition or state of the body or bodily functions 7v attack with gas; subject to gas fumes 2The despot gassed the rebellious tribes Hypo|Hyper teargas attack with teargas; subject to teargas fumes assail, attack launch an attack or assault on; begin hostilities or start warfare with v show off Syn|Hypo|Hyper blow, bluster, boast, brag, gasconade, shoot a line, swash, tout, vaunt puff speak in a blustering or scornful manner crow, gloat, triumphdwell on with satisfaction congratulate, preenpride or congratulate (oneself) for an achievement amplify, exaggerate, hyperbolise, hyperbolize, magnify, overdraw, overstate to enlarge beyond bounds or the truth |
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