| 释义 |
permeability
per·me·a·bil·i·ty P0200700 (pûr′mē-ə-bĭl′ĭ-tē)n. pl. per·me·a·bil·i·ties 1. The property or condition of being permeable.2. The rate of flow of a liquid or gas through a porous material.permeability (ˌpɜːmɪəˈbɪlɪtɪ) n1. the state or quality of being permeable2. (General Physics) a measure of the response of a medium to a magnetic field, expressed as the ratio of the magnetic flux density in the medium to the field strength; measured in henries per metre. Symbol: μ See also relative permeability, magnetic constant3. (Civil Engineering) civil engineering the rate of diffusion of a fluid under pressure through soil4. (Aeronautics) the rate at which gas diffuses through the surface of a balloon or airship, usually expressed in litres per square metre per dayper•me•a•bil•i•ty (ˌpɜr mi əˈbɪl ɪ ti)
n. 1. the quality or state of being permeable. 2. Physics. a. the rate at which a pressurized gas or liquid passes through a porous medium. b. the ability of a medium to permit such flow. 3. a measure of the ability of a material to alter the magnetic field in the area that it occupies. 4. the capability of a porous rock or sediment to permit the flow of fluids through its pore spaces. [1750–60] permeabilityThe ability of a substance to let another substance pass through it.Thesaurus| Noun | 1. | permeability - the property of something that can be pervaded by a liquid (as by osmosis or diffusion)permeablenessporosity, porousness - the property of being porous; being able to absorb fluidsabsorbency - the property of being absorbentimpermeability, impermeableness - the property of something that cannot be pervaded by a liquid |
Translationsconductivité hydrauliqueperméabilitépermeabilit...permeabilità
Permeability
permeability[‚pər·mē·ə′bil·əd·ē] (electromagnetism) A factor, characteristic of a material, that is proportional to the magnetic induction produced in a material divided by the magnetic field strength; it is a tensor when these quantities are not parallel. Also known as magnetic permeability. (fluid mechanics) The ability of a membrane or other material to permit a substance to pass through it. Quantitatively, the amount of substance which passes through the material under given conditions. (geology) The capacity of a porous rock, soil, or sediment for transmitting a fluid without damage to the structure of the medium. Also known as conductivity; perviousness. (naval architecture) The percentage of a given space in a ship that can be occupied by water. PermeabilityA measure of the ability of a material, such as rock or soil, to transmit fluids or air through it.permeability1. The property of a porous material which permits the passage of water vapor through it. Also See permeance. 2. The property of soil, rock, or mantle which permits water to flow through it.permeability
permeability [per″me-ah-bil´ĭ-te] the property or state of being permeable.per·me·a·bil·i·ty (per'mē-ă-bil'i-tē), The property of being permeable.per·me·a·bil·i·ty (pĕr'mē-ă-bil'i-tē) The property of being permeable. per·me·a·bil·i·ty (pĕr'mē-ă-bil'i-tē) The property of being penetrable. permeability
permeabilityThe measure of a material's ability to transmit liquids.The passage of soil contaminants into groundwater increases as soil permeability increases.On the other hand,in situ remediation—removal or decomposition—of groundwater contamination is easier as permeability increases.For a color map of the United States showing the relative permeability of soils across the country, see the Web site page of the Environmental Protection Agency at www.epa.gov/iwi/1999sept/iv20_usmap.html. See PERM
See Kpermeability
Related to permeability: Relative permeabilitySynonyms for permeabilitynoun the property of something that can be pervaded by a liquid (as by osmosis or diffusion)SynonymsRelated Words- porosity
- porousness
- absorbency
Antonyms- impermeability
- impermeableness
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