logarithm

n. 对数 [经] 对数

发音

UK /ˈlɒɡ.ə.ɹɪ.ð(ə)m/
其它
UK /ˈlɔɡ.ə.ɹɪ.ð(ə)m/
US /ˈlɑ.ɡə.ɹɪ.ð(ə)m/
US /ˈlɑ.ɡəɹ.ɹɪ.ðəm/
US /ˈlɑɡ.ə.ɹɪðm/
US /ˈlɑɡ.əɹ.ɹɪðm/
CA /ˈlɑ.ɡə.ɹɪ.ð(ə)m/

词形变化

logarithms 复数 logarithms

释义与例句

n.
  1. 1.

    For a number x, the exponent by which a given base number must be raised in order to obtain the power x. Written log _bx. For example, log ₁₀1000=3 because 10³=1000 and log ₂16=4 because 2⁴=16.

    对数

    数学

    For a currency which uses denominations of 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, etc., each jump in the base-10 logarithm from one denomination to the next higher is either 0.3010 or 0.3979.

词汇关系

名词

同义词 1

log

上位词 3

power index exponent

下位词 3

common logarithm Napierian logarithm natural logarithm

相关短语

natural logarithm [计] 自然对数 binary logarithm common logarithm [电] 常用对数 Napierian logarithm [数] 自然对数 Naperian logarithm ternary logarithm Briggs logarithm Briggsian logarithm

词源

From New Latin logarithmus, term coined by Scottish mathematician John Napier from Ancient Greek λόγος (lógos, “word, reckoning”) and ἀριθμός (arithmós, “number”); compare rational number, from analogous Latin.

来源：wiktionary