d

d
abbreviation for
  1. ■(in genealogies) daughter
    (家谱)同 daughter
    ■day(s)
    同 day或days
    orbital period (Mars): 687.0d.
    (火星)轨道周期:687.0天。
    ■[in combination](in units of measurement) deci-
    (度量单位)同 deci-
    ■(in travel timetables) departs
    (旅行时刻表)同 departs
    ■(d.)died (used to indicate a date of death)
    [表示死亡日期]同 died
    Barents, Willem (d.1597).
    巴伦支,威廉(卒于1597年)。
    Latin
    ■(Brit.)penny or pence (of pre-decimal currency)
    (英)。 (旧制货币)同 penny 或 pence
    £20 10s 6d.
    20英镑10先令6便士。
    ■(Chemistry)denoting electrons and orbitals possessing two units of angular momentum
    (化)(电子,轨函数)双角动量的
    d-electrons.
    双角动量电子。
symbol for
  1. ■(Mathematics)diameter
    (数)直径
    ■(Mathematics)denoting a small increment in a given variable
    (数)微分
    dy/dx.
    函数y的微分与函数x的微分之比。
英语宝典
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