extraction中文什么意思

n.
1.抽出，拔出。
2.【化学】提取(法)；萃取(法)；回收物，提出物；精炼。
3.精选，摘要。
+更多解释...4.血统，家世，出身。
5.【数学】开方，求根。
短语和例子
spirit of the first extraction 原汁酒。 a man of foreign extraction 外国(血统的)人。 extractions from a book 一本书的内容摘录。 an extraction of 81 percent 百分之八十一的出粉率，八一粉。 the extraction of root 【数学】开方法，求根法。

• extraction ():    引出运算子
• a painlell extraction:    无痛拔牙
• absorption extraction:    吸收分离; 吸收萃取

例句与用法

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1. They are by-products from the oil extraction .
   它们是提炼石油时产生的副产品。
2. He needs two extractions .
   他需要拔掉两颗牙齿。
3. Men said he was an english cavalier, and of no high extraction .
   人家说他是英国骑士，门弟并不高。
4. Germinability of pollen largely depends on the extraction procedure .
   花粉的发芽力大部分取决提取的过程。
5. Absorption studies were conducted on the residue after each extraction .
   吸附研究是在每一个提取后的残渣上进行的。

英文释义

名词

1. the action of taking out something (especially using effort or force); "the dentist gave her a local anesthetic prior to the extraction"
2. properties attributable to your ancestry; "he comes from good origins"
   同义词：origin, descent
3. the process of obtaining something from a mixture or compound by chemical or physical or mechanical means