| 释义 |
re·duc·tion AHD[rĭ-dŭkʹshən] D.J.[rɪˈdʌkʃən]K.K.[rɪˈdʌkʃən]n.（名词）abbr. red.【缩写】- The act or process of reducing.减少：减少的行为或过程
- The result of reducing:减少的结果：a reduction in absenteeism.缺席人数的减少
- The amount by which something is lessened or diminished:减少量：某物被缩短或减少的量：a reduction of 12 percent in violent crime.严重犯罪率下降12个百分点
- Biology The first meiotic division, in which the chromosome number is reduced. Also called reduction division 【生物学】 减数分裂：细胞第一次染色体数目减少大减数分裂 也作 reduction division
- Chemistry 【化学】
- A decrease in positive valence or an increase in negative valence by the gaining of electrons.还原：通过获得电子而造成正价电子减少和负价电子增多
- A reaction in which hydrogen is combined with a compound.氢化反应：氢与化合物结合的反应
- A reaction in which oxygen is removed from a compound.还原反应：把氧从化合物中分离的反应
- Mathematics 【数学】
- The canceling of common factors in the numerator and denominator of a fraction.约分：削去分数中分子和分母的公约数
- The converting of a fraction to its decimal equivalent.分数化成小数：把分数写成与之相等的小数
- The converting of an expression or equation to its simplest form.简化方程式：把表达式或方程式化至最简的形式
- Middle English reduccion [restoration] 中古英语 reduccion [重新设立]
- from Old French reduction 源自 古法语 reduction
- from Latin reductiō reductiōn- 源自 拉丁语 reductiō reductiōn-
- from reductus [past participle of] redūcere [to bring back] * see reduce 源自 reductus redūcere的过去分词 [收回] * 参见 reduce
reducʹtional adj.（形容词） |