单词	sample
释义	Sample A selection taken from a larger group (the "population") that will, hopefully, let you find out things about the larger group. Samples should be chosen randomly. Example: you ask 100 randomly chosen people at a football match what their main job is. Your sample is the 100, while the population is all the people at that match. See: Population
随便看	truth table turn turn symmetry twelve-hour clock twenty-four hour clock twice two-dimensional two-step equation unary operation undecagon undecimal unearned income unequal union unit unit cost unit fraction unit of measurement unit price unit rate unit vector units univariate data universal set upper bound

数学辞典收录了1200条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。