Today the mass standard is the last remaining SI unit based on an unique man-made object.

  • 质量基准是迄今唯一保留人工制品的SI单位.

  • 互联网摘选 2025-01-20 18:07:49

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句