The contradiction between mechanical characters, secondary pollution and cost by optimal design can be solved, which will lay a base to establish systemic solidification theory.
通过对固化处理进行优化设计可以解决力学性质、二次污染以及造价三者之间存在的矛盾，为建立系统的固化理论奠定了基础。
Using the licensed spectrum in "secondary utilization" way, cognitive radio provides a feasible solution for contradiction between spectrum resource scarcity and increasing radio access demands.
认知无线电通过对授权频谱进行“二次利用”的方式，为缓解频谱资源缺乏与日益增长的无线接入需求之间的矛盾提供了可行的思路。
Part III, analysis of the contradiction between the support and demand of secondary vocational education, including the existing problem and reason, and how to solve the contradiction.
第三部分是对中等职业教育供给和需求矛盾的分析，其中对中等职业教育供需矛盾存在的问题、矛盾存在的原因和矛盾的解决一一进行了分析。
Part III, analysis of the contradiction between the support and demand of secondary vocational education, including the existing problem and reason, and how to solve the contradiction.
第三部分是对中等职业教育供给和需求矛盾的分析，其中对中等职业教育供需矛盾存在的问题、矛盾存在的原因和矛盾的解决一一进行了分析。
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