By model study of mixed potential, a viewpoint is put forward that thallium ions have obvious enhancing effect on cyanide dissolution of gold only when they are associated with cathodic enhancement.

通过对混合电位模型的研究，提出了铊离子对金氰化溶解只有在辅以阴极强化的条件下才具有显著强化作用的观点。

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This paper offers a critical study on transaction costs from the viewpoint of its origin of thought, its recent development, sources of reality, and methodology of analysis.

本文从思想渊源、近期进展、现实根源和分析方法等方面，对交易费用概念进行批评性考察。

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The paper gives a primary discussion on the rationality and importance of Mcluhan' s viewpoint and argues that it is of significance for us to study communication media.

本文对其观点存在的合理性及其重要性做了初步论述，认为其观点对我们认识和研究传播媒介有重要意义。

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