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自然时效
释义
自然时效
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工学
时效
释
natural aging
自然时效
通过把机械零件曝露于室外自然环境下,经过长时间风吹、日晒、雨淋和季节变化,给零件造成多次反复的温度应力过载,促使残余应力发生释放而使尺寸获得稳定的方法。是古老的时效方法。
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National Indoor Stadium
National industrial designer professional qualification certification
National Industrial Metrology and Measurement Centre for Aero Craft
National Industrial Recovery Act(NIRA)
National information education program
National Information Infrastructure
National Information Infrastructure of USA: Agenda for Action
National Information Leading Group
National Information Policy
national information policy
National Information Policy Guideline
national information service infrastructure
National Information Standards Organization
national information system
National Information System for Crime Scene Investigation of Public Security Organs
National Infrastructure of Fishery Germplasm Resource
National Injury Surveillance System, NISS
national innovation information support system
National Innovation League in Cultural Heritage Conservation Science and Technology Region
national innovation system
National Innovation Systems,NIS
National Institute for Ceremony
National Institute for Compilation and Translation
National Institute for Foreign Legal History
National Institute of Advanced Industrial Science and Technology,Japan
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