目的：观察冬季野外训练期间战士细胞免疫功能的变化。
AIM:To observe the changes of the cell immunological function in soldiers during field training in winter.
目的：观察冬季野外训练前后战士心理和免疫功能的变化，并探讨两者之间的关系。
AIM: To observe the changes of the psychological health and immunological function in soldiers before and after the winter training in open country, and investigate the association between them.
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