epoch

CET-6 大学 FREQ #39454 ★☆☆☆☆

n. 新纪元, 时代, 时期

发音

UK /ˈiːpɒk/
其它
UK /ˈɛpɒk/
其它
UK /ˈɛpək/
US /ˈɛp.ək/
US /ˈɛpˌɑk/
US /ˈiˌpɑk/
US /ˈeɪˌpɑk/

词形变化

epochs 复数 epochs epoched epoching epochs 三单 epoching 现在分词 epoched 过去式 epoched 过去分词

别名

epocha

教材释义与例句

名词

世；新纪元；新时代；时间上的一点

释义与例句

n.
  1. 1.

    A particular period of history, or of a person's life, especially one considered noteworthy or remarkable.

    时代

    会

  2. 2.

    A notable event which marks the beginning of such a period.

  3. 3.

    A specific instant in time, chosen as the point of reference or zero value of a system that involves identifying instants of time.

    天文 计算机 工程 数学

    UNIX epoch; J2000 epoch

  4. 4.

    A geochronologic unit of hundreds of thousands to millions of years; a subdivision of a period, and subdivided into ages (or sometimes subepochs).

    世

    地质
  5. 5.

    One complete presentation of the training data set to an iterative machine learning algorithm.

    计算机

    The neural network was trained over 500 epochs.

v.
  1. 1.

    To divide (data) into segments by time period.

    及物

词汇关系

名词

同义词 1

era

上位词 6

date period geological time geologic time period of time time period

下位词 3

day age modern era

整体词 2

period geological period

相关短语

Amazonian epoch Hesperian epoch Noachian epoch Planck epoch Genesee epoch habitable epoch

词源

From Medieval Latin epocha, from Ancient Greek ἐποχή (epokhḗ, “a check, cessation, stop, pause, epoch of a star, i.e., the point at which it seems to halt after reaching the highest, and generally the place of a star; hence, a historical epoch”), from ἐπέχω (epékhō, “to hold in, check”), from ἐπι- (epi-, “upon”) + ἔχω (ékhō, “to have, hold”). Doublet of epoche.

来源：wiktionary