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1. Oxford American Dictionary

   density

   • IPA[ˈdensədē]

   美式

   • n.
     the degree of compactness of a substance；a measure of the amount of information on a storage medium (tape or disk). For magnetic tape it is the amount of information recorded per unit length of tape (bits per inch or millimeter); for a disk, a fixed number of bits per sector, sectors per track, and tracks per disk

   • noun: density, plural noun: densities

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. the degree of compactness of a substance a reduction in bone density
   • ▪ a measure of the amount of information on a storage medium (tape or disk). For magnetic tape it is the amount of information recorded per unit length of tape (bits per inch or millimeter); for a disk, a fixed number of bits per sector, sectors per track, and tracks per disk chip density doubles every eighteen months a low-density 5.25-inch floppy disk
   • ▪ degree of consistency measured by the quantity of mass per unit volume.
   • ▪ the opacity of a photographic image.
   • ▪ the quantity of people or things in a given area or space areas of low population density a density of 10,000 per square mile

   high-density

   • adj.
     denoting a substance with a high degree of compactness: high-density foam

   Oxford Dictionary

   optical density

   • n.
     the degree to which a refractive medium retards transmitted rays of light.

   Oxford Dictionary

   relative density

   • n.
     the ratio of the density of a substance to the density of a standard, usually water for a ...

   Oxford Dictionary

   flux density

   • n.
     the amount of magnetic, electric, or other flux passing through a unit area.

   Oxford Dictionary

   current density

   • n.
     the amount of electric current flowing per unit cross-sectional area of a material.

   Oxford American Dictionary

   relative density

   • n.
     another term for specific gravity

   Oxford American Dictionary

   energy density

   • n.
     the amount of energy stored in a given system, substance, or region of space per unit volume: these batteries have greater energy density, so they last longer and weigh less

   Oxford American Dictionary

   space density

   • n.
     the frequency of occurrence of stars, particles, or other heavenly bodies, per specified volume ...

   Oxford American Dictionary

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3. • 更多解釋

   density

   • IPA[ˈdɛnsɪti]

   英式

   • n.
     the degree of compactness of a substance: a reduction in bone density

   Oxford Dictionary