英语词汇“piercing mandrel”的翻译、意思、用法、释义-英汉汉英双解词典

单词	piercing mandrel
释义	piercing mandrel 基本例句冲头,穿轧心棒 Blank and trim entry will occur before piercing punches by one-half stock thickness.下料及剪边冲应比冲孔冲头高。
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