h [ eitʃ ]

• n.
  • a 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

    同义词： hydrogen atomic number 1

  • a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second

    同义词： henry

  • the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second

    同义词： Planck's constant

  • the 8th letter of the Roman alphabet

    同义词： letter h

  • (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure

    "enthalpy is the amount of energy in a system capable of doing mechanical work"

    同义词： heat content total heat enthalpy

以上来源于: WordNet