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氣體對外做功wpv的含義
氣體對外做功wpv的含義
更新时间:2025-12-17 07:17:57

  氣體對外做功,可以理解為:氣體用力F推着外部某個物體前進一段距離L所做的功.然後力等于壓強*面積即單位面積受力乘以面積:F=P*S,而體積等于長度乘以底面積:V=L*S.這樣原公式可以這樣理W=F*L=P*S*L=PV

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