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发布者:bob官方入口发布日期:冲压发动机由进气道、焚烧室、推动喷管三部分所组成,它比涡轮喷气发动机简略得多
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1970-01-01 08:00:00 -
五金冲压与模具基本知识
发布者:bob官方入口发布日期:公司主体事务有:接受国内外注塑模具规划,模流剖析,产品DFM剖析,模具人才免费引荐,模具企业规范
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1970-01-01 08:00:00 -
2023年乘用车金属冲压件行业发展现状、未来市场发展的潜力及投资方向报告
发布者:bob官方入口发布日期:《2023-2029年中国乘用车金属冲压件行业市场供需态势及投资前景研判报告》(以下简称《报告》
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1970-01-01 08:00:00