直接由系统容积变化和外界发生作用而传递的功称为容积变化功，或直接称为膨胀功及压缩功。
膨胀功
双语例句原声例句
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运用工程热力学的理论计算组成物料的各气体、汽体、液体于绝热过程中对外所作的膨胀功、爆沸功。
According to the engineering thermodynamic theory, the inflating work and ebulliency work exerted by the materials composed of liquid, vapour and gas during the adiabatic process are calculated.
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和增加税收、削减开销相比，通货膨胀稍微做一下脏功听起来很容易。
Compared with raising taxes or cutting spending, just letting inflation do the dirty work sounds easy.
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The piston has a cross-sectional area, a, and the force pressure is force per volume area.
我们以活塞系统为例，来说明膨胀功。
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Pressure, the piston goes down by some volume l.
我们只讨论膨胀功。
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The work input during the expansion steps.
膨胀过程中的功。
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