科学时代-面向大众传播科学知识、科学方法、科学精神和科学思想的科学普及平台。

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

热门查询：

proportional tax	proportional tax	proportional tax	proportional taxation	proportionate area by age class
proportionate grant	proportionate measurement	proportionate metaphor	proportionate sampling	proportion by addition
proportion by alternation	proportion by subtraction	proportioned	proportion factor	proportioning bin
proportioning scales	proportion judgment	proportion of causes of death	proportion of extraction	proportion of late wood
proportion of population never married	proportion of refusals	proportion of spring wood	proportion of summerwood	proportion of urban population
proportion one's expenses to one's income	proposal	proposal	proposal	proposal
proposal	proposal form	proposal form	proposed dividend	proposed rate
proposer	proposition	proposition	proposition	proposition
proposition	proposition	proposition	proposition	proposition
propositional attitude	propositional calculus	propositional calculus	propositional calculus	propositional code theory
propositional constant	propositional form	propositional function	propositional inference	propositional learning
propositional logic	propositional logic	propositional logic	propositional logic	propositional meaning