作者从主题策划中“主题”的产生，主题策划的效果，主题策划的体会三个方面介绍该刊编者的作法和体会。
The author introduced what they did and what they thought from three aspects, which were produce of theme, effect of theme plan and understanding about theme plan.
作者从临界分析的含义和优点、方法、具体计算和分析三个方面系统地介绍了临界分析方法。
From three aspects of definition and advantage, method, specific calculation and analysis, this paper introduces systematically method of critical analysis.
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