In the context of 1951~1995 characteristic quantities of northern circulations the secular trends of circulation variations were investigated.
用1951～1995年的北半球大气环流特征量资料，计算了它们的长期趋势变化。
In this way, corresponding to every single viscoelastic random medium model, we can calculate and gained 6 different wave field characteristic quantities.
这样，对应每一个粘弹性随机介质模型，我们均可计算得到6个不同的波场特征量。
Through a systematical analysis of supply chains, their basic structure models are summarized, and the characteristic quantities of their reliability are analyzed.
通过对供应链的系统分析，归纳总结了供应链的基本结构模型，并分析了其可靠性的特征量。
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