英德
有道
百度
谷歌
图片
维基
百科
中心截面
central cross-section
- 示教所得到的轨迹中心始终与被包扎线圈的截面中心重合。
The center of taped coil across section is always in line with the center of teaching tacking. - 利用基于变步长中心差分格式的显式积分方法分析瞬态轧制过程；提取稳态单元集节点形成截面网格；利用隐式积分方法分析轧制道次间隙瞬态温度场；对型钢断面进行平面四边形网格划分并映射节点温度数据；利用六面体单元构建有限元分析模型，映射单元节点的温度、积分点的等效塑性应变，进行数值分析。
The explicit finite element method(FEM) based on the varying time-step was selected to analyse the dynamic roll-pass process; the nodes on the leading face of the steady-state elements set was extracted and projected onto a plane to give the required mesh, also called the origin mesh; the implicit FEM was selected to analyses the inter-pass transient thermal process; a geometric part from the mesh was generated and meshed by using the quadrilateral elements, a heat transfer analysis was selected to transfer the node temperature data; a new model was created by using hexahedral elements, mapping the node temperature and the equivalent plastic strain on the integration points. - 表面疚是指交流电流较倾向于导体的表面传导而非流经整个导体截面的趋势，这些现象会造成导体的电阻提高，与导体中的电流有关的磁场在导体中心部位产生过电流而阻碍了中心部位的主要电流，当交流电的频率增加时，主要电流的流向会进一步被推挤到导体表面。
Skin effect is the tendency for alternating current to flow near the sruface of the conductor in lieu of flowing in a manner as to utilize the entire cross-sectional area of the conductor.This phenomenon causes the resistance of the conductor to increase.The magnetic field associated with the current in the conductor causes eddy currents near the center of the conductor which opposes the flow of the main current near the center of the conductor.The main current flow is forced further to the surface as the frequency of the alternating current increase.
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