在第二部分第一篇论文中，我们系统研究了二维非交换李代数及其全形的可解性、完备性与非半单性等性质。
In the first paper of the second part , it studies two dimensional noncommutative Lie algebra and its solvability, completeness and nonsemisimplicity and so on .
但从2002年春天开始，以色列的安全形势逐渐改善。
But security in Israel improved progressively from the spring of 2002.
总的说来，这是一种非常粗粒度的安全形式，用于处理对系统的功能领域的访问，可以由url或对EJB组件的方法调用进行定义。
It is generally a fairly coarse-grained form of security that deals with access to functional areas of the system, perhaps defined by URLs or method calls on an EJB component.
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