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  1. Oxford Dictionary

    d

    • IPA[diː]

    英式

    • abbr
      (in genealogies) daughter；day(s)
    • symbol
      diameter；denoting a small increment in a given variable
    • 釋義

    abbr

    • 1. (in genealogies) daughter Henry m. Georgina 1957, 1s 2d
    • 2. day(s) orbital period (Mars): 687.0 d
    • 3. (in units of measurement) deci-.
    • 4. (in travel timetables) departs Plymouth d 0721
    • 5. died (used to indicate a date of death) Barents, Willem (d.1597)
    • 6. British penny or pence (of pre-decimal currency) £20 10s 6d
    • 7. denoting electrons and orbitals possessing two units of angular momentum d-electrons

    symbol

    • 1. diameter the circumference of a circle is expressed by the formula πd
    • 2. denoting a small increment in a given variable dy/dx