目的：观察冷、热环境下游泳运动员和非运动员生理和内分泌指标的变化，以及这些变化对人体免疫系统的影响。
AIM: To observe the changes of physiological and endocrine indexes in swimming athletes and non-athletes under coldness and hotness and their influence on human immune system.
引入随位移变化的接触热阻和接触电阻有助于描述接触部位的非连续温度场变化；
The variational contact resistance with the displacement field can help describe the discontinuous temperature distributions of the contact regions better.
在不考虑横向烧结非均匀性的情况下，将烧结过程热状态描述为料层各带厚度的分布和迁移速度的变化。
Take no account of transversal heterogeneity, thermal state of sintering process is described as the change of the thickness of each zone in bed layer and migration rate.
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