열역학Thermodynamic / 1.1 Thermodynamic System(열역학적계) *Free body (diagram) in mechnics = ∑ =0 (Newton`s 2nd law of motion) *System in Thermodynamics 1)Closed System(밀폐계) - fixed mass - no mass transfer - energy transfer - control mass (검사질량, 고정질량) thermodynamic universe = sys + surr (열역학적 우주) (계) (계에 영향을 미칠수…
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