extraction

英 [ɪkˈstrækʃn]

美 [ɪkˈstrækʃn]

n.  提取; 提炼; 拔出; 开采; 有…血统; 族裔; 拔牙

复数：extractions　

CET6TEM8化学

BNC.7879 / COCA.10457

牛津词典

noun

• 提取；提炼；拔出；开采
  the act or process of removing or obtaining sth from sth else
  1. oil/mineral/coal, etc. extraction
     石油、矿物、煤等的开采
  2. the extraction of salt from the sea
     从海水中提取盐
• 有…血统；族裔
  having a particular family origin
  1. an American of Hungarian extraction
     匈牙利血统的美国人
• 拔牙
  the removal of a tooth

柯林斯词典

• N-UNCOUNT 血统;家世
  If you say, for example, that someone isofFrenchextraction, you mean that they or their family originally came from France.
  1. Her real father was of Italian extraction...
     她的亲生父亲是意大利裔。
  2. He married a young lady of Indian extraction.
     他娶了一位年轻的印度裔女子。

英英释义

noun

• the action of taking out something (especially using effort or force)
  1. the dentist gave her a local anesthetic prior to the extraction
• properties attributable to your ancestry
  1. he comes from good origins
  Synonym:origindescent
• the process of obtaining something from a mixture or compound by chemical or physical or mechanical means

双语例句

• The topic of this article is the selection and extraction of data from an Apache Derby database.
  本文的主题是从ApacheDerby数据库中选择和提取数据。
• The method of rules extraction and calculating process with serial carry chain based on the arbitrary division are presented.
  提出了基于任意分割的规则获取方法和相应的串行进位链计算流程。
• Robust facial expression feature extraction method is the key part of the computer aided facial expression analysis system.
  面部表情特征抽取的针对性和鲁棒性在计算机辅助面部表情自动分析系统中具有举足轻重的作用。
• Note that in TDM, the extraction and inserting processes are distinct.
  注意，在TDM中提取和插入过程是不同的。
• Such extraction modifies the whole cell-membrance network throughout the wool fiber.
  这种萃取改变了整个毛纤维中所有细胞膜的网状结构。
• It may also be used for alcohol recycling and simple reflux extraction.
  并且也能回收酒精和简单的回流提取。
• Extraction and aggregation RSS2.0 has only one recognized form: an document.
  提取和聚合RSS2.0只有一个可识别的形式：一个文档。
• The proposed off-line handwritten Chinese character recognition system was composed of a feature extraction module and a recognition module.
  提出的脱机手写体汉字识别系统主要研究特征提取和分类识别两个模块。
• Feature reduction method involves feature selection and feature extraction.
  降维的主要方法是特征选择和特征提取。
• A new method of3D facial feature extraction based on curvature information is proposed in this paper.
  提出了一种基于曲率信息的三维人脸面部特征提取方法。