... 辽宁的4种野生百合(Lilium spp.)的核型研究 Study 木霉的适宜培养基条件及药剂筛选 Selection of P 丽格海棠的组织培养 Tissue Culture of Rieger Begonia ...
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By mainly using literature and logic method this paper discusses the traits, classification and selection of P. E. teaching model.
运用文献资料法、逻辑法对体育教学模式的特点、分类和选择进行了初步探讨。
R. system is the suitable selection of recognition method. The methods of P.
设计一个识别系统的关键在于适当地选择识别方法。
The main characteristics of graphite powder are introduced with the influence on P/M details performance. The principles of selection are proposed.
本文介绍了石墨粉的主要特点。说明了石墨粉的特性对粉末冶金结构零件材料性能的影响。最后提出了选用石墨的基本准则。
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