In the paper, study on displacement law of blank hole for forming cylindraceous with bottom border by numerical simulation technology.
通过数值仿真研究了带底件成后底规律,在此基础上建立了带底件成后毛料中心规律经验公式。
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It's a very long cylinder with conical ends. It noticeably takes the shape of a cigar, a shape already adopted in London for several projects of the same kind.
船是长的圆筒形,两端作圆锥。,像一支雪前烟。这种形式,在伦敦有些船的构造早已采用过了。
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