词组、短语、俚语及习惯用语• fraction collection trap
馏分收集阱。• fraction defective
不良率,不合格率,废品率。• fraction gear
组合齿轮。• fraction numeral
分数数词。• fraction of sample in gas phase
试样在气[液]相中所占分数。• fraction of sample in liquid phase
试样在气[液]相中所占分数。• fraction stroke
分数线。• proper affine transformation
固有仿射变换。• proper alignment
同心性,同轴度。• proper automation
专有自动。
proper fraction
proper-fraction的词性：
n.Mathematics （名词）【数学】
1. A numerical fraction in which the numerator is less than the denominator.
真分数：分子比分母小的数学分数
2. A polynomial fraction in which the numerator is of a lower degree than the denominator.
分子比分母低一级的多项分数
