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

• In a subtraction operation, the number or quantity subtracted from the minuend.
  在减法运算中，从被减数减去的那个数或量。
• 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。
• Requires addition, subtraction, multiplication, division a function of the design.
  要求加法、减法、乘法、除法各设计一个函数。
• 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。
• 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。
• Objective To evaluate the clinical application of contrast-enhanced digital subtraction MRI in vertebral metastases.
  目的评估增强减影在脊椎转移瘤MRI中的应用价值。
• 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。
• 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。
• 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。