有必要把代表水汽凝结潜热释放的随时间变化率的一项作为热源项包括进热力学能量方程中。
It is necessary to include as a heat source in the thermodynamic energy equation a term which represents the time rate of release of the latent heat of condensation of water vapor.
根据螺栓的轴向应力与超声波传播时间变化率的关系，作者研究了一种可直接测量螺栓轴向应力的仪器。
On the basis of relationship between bolt axial stress and rate of change in ultrasonic wave transmission time, the author has developed a device to directly measure axial stress in bolts.
然而，他补充道：“这对于成比例的损失率中小小的变化都高度敏感，因为这些有毒资产的数目太大，并且被掩盖的时间太长。”
However, he added: "This is highly sensitive to small changes in the proportionate loss rate because the amount of assets is so big and the length of time that the assets are covered."
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