| 单词 | permeability |
| 释义 | Word Frequency permeability(ˌpɜːmɪəˈbɪlɪtɪ) noun 1. the state or quality of being permeable 2. 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 constant 3. civil engineering the rate of diffusion of a fluid under pressure through soil 4. the rate at which gas diffuses through the surface of a balloon or airship, usually expressed in litres per square metre per day |
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