(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work; "entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity" ある組織において、力学的仕事を行う場合に利用できる最大のエネルギー量を表す熱力学量。
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【下位】 an attribute of stochastic systems; generally, a system that tends in probability to a limiting form that is independent of the initial conditions 確率系の属性。一般的に、確率において初期条件に関係ない極限形に向かうシステム。
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