介绍可拓学及物元理论，提出用可拓工程方法对武器装备效能-费用进行权衡分析。
This paper not only introduces the theory of extension method and matter-element, but demonstrates trade-off analysis between efficiency and cost by means of extension theory.
介绍了可拓方法的步骤，建立了地下工程围岩评价的物元模型。
The extension method is introduced in this paper, and the matter-element model for evaluating surrounding rock stability of underground engineering is established.
介绍了可拓方法的步骤，建立了地下工程围岩评价的物元模型。
The extension method is introduced in this paper, and the matter-element model for evaluating surrounding rock stability of underground engineering is established.
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