有限项余弦变换法：finite cosine transform 有限维最优设计：finite dimensional optimal design 有限维向量空间：finite-dimensional vector space ..
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The tank structure of mining flameproof transformer is analyzed by the three-dimensional finite element method. The optimal design of tank has been carried out.
采用三维有限元法对矿用隔爆型变压器箱体结构进行了分析，完成了箱体结构的优化设计。
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