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1 英语原意

萃取：extraction

2 英文解释

1) extraction noun

the process of removing something, especially by force

（尤指用力的）拔出，提取

• The extraction of minerals has damaged the countryside.
  采矿破坏了乡间的环境。

2) [ C ] MEDICAL specialized

the process of removing a tooth

拔牙

• She had two extractions.
  她拔了两颗牙。

3) extraction noun PRODUCTION, NATURAL RESOURCES

the process of removing a substance from the ground or from another substance:

• The local economy is overwhelmingly dependent on oil and gas extraction.
• Hard-rock mining refers to the excavation and extraction of hard minerals such as those containing metals such as gold, or gems such as diamonds.

3 中文解释

萃，读作萃（cuì），形声。从艹，卒声。本义：草丛生的样子。释义：①形容草木茂盛，②聚在一起的人或物：出类拔萃，③古通“悴”，④姓。

萃取，又称溶剂萃取或液液萃取，亦称抽提，是利用系统中组分在溶剂中有不同的溶解度来分离混合物的单元操作。即，是利用物质在两种互不相溶（或微溶）的溶剂中溶解度或分配系数的不同，使溶质物质从一种溶剂内转移到另外一种溶剂中的方法。广泛应用于化学、冶金、食品等工业，通用于石油炼制工业。另外将萃取后两种互不相溶的液体分开的操作，叫做分液。