| 单词 | arithmetical progressions |
| 释义 | arithmetic /ə-rithˈmə-tik/noun
ORIGIN: Gr arithmētikē (technē) (art) of numbers, from arithmos number arithmetic /ar-ith-metˈik/ or arithmetˈical adjective arithmetˈically adverb arithmetician /-mə-tishˈn or arˈ/ noun A person skilled in arithmetic arithmetical progression or arithmetical sequence noun A series increasing or diminishing by a common difference, eg 7, 10, 13, 16, 19, 22, or 12, 101/2, 9, 71/2, 6 arithmetic logic unit noun (computing) The part of a central processing unit that carries out arithmetic and logical operations (abbrev ALU) arithmetic mean or arithmetical mean see mean3 |
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