“十四五”以来中国多项新建国家计量基准达国际先进水平|中文字幕久久熟女蜜桃

  中新社北京11月21日电 (记者 刘亮)中国国家市场监管总局21日披露,“十四五”以来,中国新建国家计量基准34项,较“十三五”期间同比增长89%,多项达到国际先进水平,实现量质齐升。

  在医疗卫生、食品安全等民生关切领域,漫透射视觉密度基准装置可精准测量并评价图像视觉效果,助力医生清晰分辨核磁图像中病变导致的、仅千分之一的视觉深浅差异;“基于同位素稀释质谱法的元素含量基准”可精准分析物质中化学元素含量,可用于临床人血清中电解质成分,奶粉中各种元素,化妆品中有害元素的检测。

  在深空探测领域,“微波亮温度基准”以千分之三的误差捕捉微弱辐射信号,助力卫星精准探测星球表面成分与地质活动,支撑行星科学研究。在海洋勘探方面,“中频水声声压基准”通过激光干涉技术校准水声传感器,实现对水下潜航器、坠海飞机“黑匣子”的精确定位。空气流速基准装置可精准捕捉到蝴蝶扇动翅膀级的微弱风速,有助于服务风电产业发展。

  相关成果还服务电子信息、新材料、高端装备、精密仪器等产业升级,突破精度与工艺瓶颈。如二维线纹基准装置测量不确定度仅28纳米,解决亚微米、纳米级光刻机母版二维线纹“测不准”难题。

  国家市场监管总局表示,“十五五”时期将持续强化测量源头能力供给,强化计量基础和极大值、极小值、动态量精密测量能力建设,为筑基新质生产力发展奠定坚实计量根基。(完)

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