On the base of the explanation and description of the theory foundations and references of the rational core of tcc , the dissertation proposes a white - box theory and principles of cost utility analysis in detail . further more , a modern cost utility control system and model is formulated in chapter six 為此,本文充分吸論成本效用差異及其系統(tǒng)控制收與借鑒了傳統(tǒng)成本理論的合理內(nèi)核,較為詳盡地研究和分析了適用于新環(huán)境的白箱理論與成本效用分析原理,并進(jìn)行了現(xiàn)代成本效用控制系統(tǒng)的構(gòu)建。