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自然科学 (期一页) 用非线性优化法识别接触刚度和接触阻尼····················,……祝效国,来丽萍(1一1),无转调条件的二级文法与分析表的分类构造法···························……李芸(1一8) 饲粮硒水平对仔猪组织器官硒
Natural Science (on a page) Non-linear optimization method to identify contact stiffness and contact damping ··············, ), No classification conditions for the second grammar and analysis of the classification of construction method ... ... ... ... ... ... Li Yun (1 a 8) Selenium levels on the tissues and organs of piglets selenium