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pdm系统是什么？plm系统是什么？pdm系统和plm系统有什么区别？ - 知乎 PDM is a product data management system, which is usually used to manage various data in the process of product development, design and manufacturing, such as design documents, 3D models, parts lists, process routes, etc PDM aims to improve data management and sharing to reduce errors and delays in production and design processes
你认为 PC 上最好用的 PDF 阅读器是哪一种？ - 知乎 PDF-XChange Viewer效果 总之，PDF-XChange Viewer兼顾较强的注释功能和极快的启动速度，即使在性能羸弱的PC上也能顺畅运行，适合需要快速浏览文档并做少量笔记的同学。