Quaternary
[kwə'tɜːn(ə)rɪ] or [kwə'tɝnəri]
解释:
(a.) Consisting of four; by fours, or in sets of four.
(a.) Later than, or subsequent to, the Tertiary; Post-tertiary; as, the Quaternary age, or Age of man.
(n.) The number four.
(n.) The Quaternary age, era, or formation. See the Chart of Geology.
黛博拉校对
解释:
adj. consisting of four: by fours: pertaining to strata more recent than the Upper Tertiary: (math.) containing four variables.—n. a group of four things.—adjs. Quāt′ern Quāter′nāte composed of or arranged in sets of four.—n. Quāter′nion a set or group of four: a word of four syllables: (pl.) in mathematics a calculus of peculiar power and generality invented by Sir W. R. Hamilton of Dublin as a geometry primarily concerning itself with the operations by which one directed quantity or vector is changed into another.—v.t. to divide into quaternions: (Milt.) to divide into companies.—ns. Quāter′nionist a student of quaternions; Quātern′ity the state of being four a group of four.—Quaternary number ten; so called by the Pythagoreans because equal to 1 + 2 + 3 + 4.
卡里校对