最常见的方法是分类归入到四维矩阵中，矩阵的一个轴上是服务器和虚拟机，另外一个轴上是网络和存储。

The most common method is to split the categories into a four-way matrix with server and virtual machine problems on one axis and network and storage on the other axis.

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阐述四维安全责任矩阵在项目安全管理应用中的重要意义，并指明本研究的不足及未来的研究展望。

Then, expounds the important value of the application of 4d safety responsibility matrix in the project safety management. Finally, states the lack of this research and future research prospects.

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