datum

CET-4

n. 论据, 材料, 资料, 已知数 [医] 材料, 资料, 论据

发音

US /ˈdeɪtəm/

词形变化

data 复数 data datums datums 复数 datumed datuming datummed datumming datums 三单 datuming 现在分词 datumed 过去式 datumed 过去分词

释义与例句

n.
  1. 1.

    Something known or assumed as fact, and is made the basis of reasoning or inference which an intellectual system of any sort (such as knowledge or theoretical framework) is constructed.

    a datum of experience

    given this datum, it follows that

  2. 2.

    Singular of data: A single recorded phenomenon, especially obtained by scientific work.

    Holonym: data set

  3. 3.

    A point, line, plane, or surface with reference to which positions (such as elevations) are measured or indicated. (Examples include a permanent benchmark in leveling or mean sea level in a topographical survey).

    商务 工程

    A geodetic datum is sometimes also called a benchmark.

    GD&T tells us that the center of a bolt circle is in fact defined by the locations of the holes themselves, as each is a datum.

  4. 4.

    A floating reference point, or SLDMB, used to evaluate surface currents in a body of water, and often employed by coastal search and rescue.

    航海 交通
v.
  1. 1.

    To provide missing data points by using a mathematical model to extrapolate values that are outside the range of a measuring device.

词汇关系

名词

同义词 1

data point

上位词 1

information

下位词 3

reading indication statistic

相关短语

datum line 基准线 datum plane 基准面 [化] 假设零位面 datum planes datum point [计] 基准点 datum points datum circle datum circles datum surface datum surfaces datum lines chart datum sense datum n. 感觉材料，经验因素

词源

Etymology tree Proto-Indo-European *deh₃- Proto-Indo-European *dédeh₃ti Proto-Italic *didō Latin dō Latin datusnom. Latin datumlbor. English datum Learned borrowing from Latin datum, a nominalization of datus, perfect passive participle of dō, from Proto-Italic *didō, from Proto-Indo-European *dédeh₃ti, from *deh₃-. Doublet of die.

来源：wiktionary