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| 1. | By means of analogy, design analysis and PDPC method, a quick and successful way is worked out for designing |
| 简明介绍了用类比法、计分析法及PDPC过程决策法,快速成功地设计、造镗抽油机减速箱体轴孔的专用、刀、自动双面镗组合机床。 |
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| 2. | Their mechanical and optical behavior can be explained more easily by means of the analogy of the wax-impregnated |
| 它们的力学和光学特性通过用浸蜡海绵作模拟，更容易进行解释。 |
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| 3. | Abstract: Basing on the introduction of brim-vector and face-vector, by means of analogy, the paper popularizes |
| 文摘:在引入边矢量及面矢量概念的基础上，以类比作为手段，对余弦定理进行由平面三角形到空间多边形乃至任意多面体的一系列推广，得出了形式对称一致的一组广义余弦定理，并给出了其简捷严谨的证明。 |
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