The working principle, principal block diagram, and the detecting records of the three-phase power converter are also analysed in this article.
本文还对三相功率变换器的工作原理、原理框图以及检测数据进行了分析。
Calculation methods to determine the mass of polygonal and non-regular form steel plate are introduced and a principal block diagram for oil tank bottom plate mass calculation is listed in this paper.
介绍了多边形钢板与不规则多边形钢板质量的计算方法，列出了用计算机计算油罐底板质量的原理框图。
Thus the research on stress trait, design calculation theory and construction principal point of block retaining structure has certain significance in theory and practical engineering.
因此对砌块式挡土结构的受力特点、设计计算理论及施工要点进行理论分析及试验研究，具有一定的理论与工程实际意义。
A method is presented here for color image compression which is based on efficient combination of Block Truncation coding (BTC) and Principal Component Analysis (PCA).
本文提出的彩色图象压缩方法基于BTC(块截断编码)和PCA(主成分分析)的有效结合。
By bringing forward the concept of sliding coefficient, it is proved that the sliding coefficient is fitted to the principal of weighted arithmetic average regarding the sliding block as weight.
提出滑动系数概念，证明了滑动系数符合以重量为权的加权平均原则；
By bringing forward the concept of sliding coefficient, it is proved that the sliding coefficient is fitted to the principal of weighted arithmetic average regarding the sliding block as weight.
提出滑动系数概念，证明了滑动系数符合以重量为权的加权平均原则；
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