subtraction

英 [səb'trækʃ(ə)n]

美 [səb'trækʃən]

n.  扣除; 减法

复数：subtractions　

高考TOEFLTEM8计算机

BNC.21520 / COCA.21980

柯林斯词典

• VERB 减;减去
  If yousubtractone numberfromanother, you do a calculation in which you take it away from the other number. For example, if you subtract 3 from 5, you get 2.
  1. Mandy subtracted the date of birth from the date of death...
     曼迪用去世的日期减去出生的日期。
  2. We have subtracted $25 per adult to arrive at a basic room rate.
     我们已给每位成人房客减去了 25 美元，这就是基本的房费价格了。

英英释义

noun

• the act of subtracting (removing a part from the whole)
  1. he complained about the subtraction of money from their paychecks
  Synonym:deduction
• an arithmetic operation in which the difference between two numbers is calculated
  1. the subtraction of three from four leaves one
  2. four minus three equals one
  Synonym:minus

双语例句

• The main idea of the spectral subtraction algorithm is noise detection and spectral subtraction rule.
  谱相减语音增强算法的核心是噪声检测和谱减规则。
• The easiest one to remember is that multiplication and division happen before addition and subtraction.
  其中，最简单的规则就是乘法和除法在加法和减法之前完成。
• Background subtraction should be solved at first in intelligence surveillance and auto target recognition.
  背景消除是智能视觉监控和自动目标识别与跟踪首先要解决的问题。
• This new algorithm uses the background subtraction method to get the foreground image, and then gets the binary image using threshold value and makes the morphology processing.
  该算法利用背景差法获得前景图像，然后进行二值化和形态学处理，再和背景帧进行比较来对滞留和搬移物体进行检测和分类。
• Objective To assess the displaying capabilities and advantages of routine CTA and subtraction CTA of the jugular bulb.
  目的探讨常规CTA及减影CTA技术显示颈静脉球的能力及优势。
• There will be simple tests in addition, subtraction, multiplication and division.
  会有对加、减、乘、除运算的简单测试。
• The plus sign is used in addition and the minus is used in subtraction.
  加号用于加法；减号用于减法。
• One of the common methods is based on the background subtraction.
  减背景法是常用的方法之一，但其受环境光照影响；
• So the adding and the subtraction of vectors is way more complicated than just scalars.
  因此矢量的加法和减法，要比标量复杂。
• Number Keys and Basic Math Functions: Addition, Subtraction, Multiplication, Division.
  有多少钥匙和基本的数学函数：加法，减法，乘法，记名表决。