点击下载：上海交通大学：《工程学导论》课程教学资源（讲义）Technical knowledge_1screw
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Threaded Fasteners and Power Screws Introduction to Engineering4 Introduction to Engineering Threaded Fasteners Threaded Fasteners and Power Screws and Power Screws
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点击下载：上海交通大学：《工程学导论》课程教学资源（讲义）Technical knowledge_1screw
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