英 [səbˈtrækʃ(ə)n] 美 [səbˈtrækʃ(ə)n]
n. 减去；（数）减，减法
复数subtractions
差分方法-引用次数：6
It analyzes the common method of detecting objects, and presents a algorithm of detecting objects which combine background subtraction with time difference to improve the performance of detecting.
分析了目标检测的常用方法,提出将背景减除与时间差分方法结合的检测目标方法,提高了目标检测准确性。
减法
减影-引用次数：231
The results accorded with surgical and digital subtraction angiography(DSA)findings.
结果与手术及数字减影血管造影(DSA)检查结果相一致。
消减-引用次数：12
Screening the forward and reverse subtraction librarywith colony PCR and dot hybridization, 80 clones were identified as the differentialexpressed cDNA fragment, and the size was between 200 bp and 800 bp.
从正反向消减文库中随机挑选160个阳性克隆，通过菌落PCR和斑点杂交技术进行鉴定，共获得80个差异表达明显的cDNA片段，其大小在200bp～800bp之间。
减法-引用次数：6
The identification precision of multi-spectrum signal can be improved by changing multi-spectrum signal into singleness-spectrum signal with subtraction.
将多谱线信号利用"减法"改造成单一谱线信号可大大提高谱线辨识精度。
参考来源谱线辨识方法的改进
减法
减去法
采用模加法(Addition)、模减法(Subtraction)与互斥(XOR)这几个是最简单的 运算。 5.
减法运算(Subtraction)系统显示一道减法题,要求计算出答案(按数字键回答)15.
2）、差集（Subtraction）是将从一个样条线中删除与另外一个样 条线相交的部分。 3）、交集（Intersection）是根据两条样条线的相交区域创建一条 样条线。
... stress 压力，张力，应力 subtraction 减去法（放射诊断学） splenic venography 脾门静脉造影术 ...
subtractive 减去的；负的；有负号的
subtracter [计] 减法器；扣除者
subtract 减去；扣掉
She's ready to learn simple addition and subtraction.
她准备学习简单的加法和减法。
There will be simple tests in addition, subtraction, multiplication, and division.
将会有加减乘除的简单测试。
We can use the magic of subtraction.
我们可以利用减法的魔力。
I've got one test there, and then I've just got one thing to do here, which has got a subtraction and a multiplication.
这儿有一个比较,然后在一个基本步骤里,做了一个减法和一个乘法两个基本操作。
计算机科学及编程导论课程节选 : 麻省理工公开课
Some of this work's been done at Yale in Karen Wynn's lab, where they look at babies' understanding of addition and subtraction.
这个研究的一些部分是在耶鲁的,凯伦·韦恩实验室进行的,他们在那里观察婴儿对加减法的理解
心理学导论课程节选 : 耶鲁公开课
Most of these are probably self explanatory, addition, subtraction, multiplication, division, and anyone?
其中很多都不需要加以说明的，像加号，减号，乘号，除号和？
计算机科学课程节选 : 哈佛公开课
Second, I consider myself still a student of subtraction, not a master of it.
FORBES: How to Remove Activities From Your Life and Increase Productivity
The 50 long recommendations fell a collective 10.6%, after our usual 1% subtraction for trading fees.
In product design, business strategy, and yes, communications and presentations, subtraction often adds value.