近日，日本丰田纺织公司首次对外界公开其自主开发的精密冲压加工工艺FHS（Fine Hold Stamping）的技术信息。FHS与FB（普通的精密冲压加工工艺）十分相似，但FHS采用完全覆盖至毛环侧面的冲头，通过防止材料的“逃逸”来提高加工质量...近日，日本丰田纺织公司首次对外界公开其自主开发的精密冲压加工工艺FHS（Fine Hold Stamping）的技术信息。FHS与FB（普通的精密冲压加工工艺）十分相似，但FHS采用完全覆盖至毛环侧面的冲头，通过防止材料的“逃逸”来提高加工质量——这是其独到之处。相比FB，FHS可对工件进行高速高精度加工。展开更多
Cohort studies are important epidemiological methods to investigate associations between environmental factors,individual characteristics,and disease or other health outcomes.As a paradigm of cohort studies,the Framin...Cohort studies are important epidemiological methods to investigate associations between environmental factors,individual characteristics,and disease or other health outcomes.As a paradigm of cohort studies,the Framingham Heart Study(FHS)is the longest-running cardiovascular epidemiological study,starting in 1948.展开更多
文摘近日，日本丰田纺织公司首次对外界公开其自主开发的精密冲压加工工艺FHS（Fine Hold Stamping）的技术信息。FHS与FB（普通的精密冲压加工工艺）十分相似，但FHS采用完全覆盖至毛环侧面的冲头，通过防止材料的“逃逸”来提高加工质量——这是其独到之处。相比FB，FHS可对工件进行高速高精度加工。
文摘Cohort studies are important epidemiological methods to investigate associations between environmental factors,individual characteristics,and disease or other health outcomes.As a paradigm of cohort studies,the Framingham Heart Study(FHS)is the longest-running cardiovascular epidemiological study,starting in 1948.
