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 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。
• Background subtraction and interference correction are the crucial processes to improve the precision and the resolving power of the electron microprobe analyzer.
  对提高电子探针分析精度和分辨本领的关键和难点-背景扣除和重叠峰修正的理论和方法发展进行了综述。
• A novel algorithm for moving detection, which employed adaptive background subtraction and symmetrical differencing method, was presented.
  提出一种基于动态阈值对称差分和背景差法的运动对象检测算法。
• An approach to speech-sound enhancement is proposed based on the spectral subtraction.
  提出了一种基于谱减法的语音增强算法。
• 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。
• When combining addition and subtraction with multiplication and division it is necessary to take interim totals.
  当加减法和乘除法联合运算时，必需取得中间和数。
• 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。
• 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。
• 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；
• Pupils are taught addition and subtraction first.
  小学生首先学加法和减法。