This paper focuses on the comparison of the matching of dies and floating plugs with different Angle with the aid of 2d axisymmetric elastic-plastic FEM and the influence of drawing copper tubes.

采用二维轴对称弹塑性有限元法对比分析了不同外模模角和游动芯头锥角的配合对拉拔铜管的影响。

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The utility model relates to a free-floating light beacon of navigational aid on water in the sea, a river, or a harbor.

本实用新型是一种海、河港口用水上助航活节式灯桩。

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