order of magnitude

名词 n.
中文释义

英文释义

名词 n.
  1. The class of scale or magnitude of any amount, where each class contains values of a fixed ratio (most often 10) to the class preceding it.
    — 2011, Enrico Fermi, Wikisource (translator), Concerning a Contradiction between the Electrodynamic and Relativistic Theory of Electromagnetic Mass, 1922, Enrico Fermi, Über einen Widerspruch zwischen der elektrodynamischen und relativistischen Theorie der elektromagnetischen Masse, Physikalische Zeitschrift, v 23, pp 340-344, However, we notice that although this contraction is of order of magnitude v²:c², it changes the most important terms of electromagnetic mass, i.e, the rest mass.

词形变化

orders of magnitude plural

词源

18th century, in the sense "magnitude (brightness class) of a star", informed by the Greek τῶν μεγάλων τάξις (tôn megálōn táxis) (Ptolemy).
0 次浏览 数据来源: Wiktionary