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extractive    
a. 引得出的,萃取的,抽取的
n. 抽出物,精,熬汁

引得出的,萃取的,抽取的抽出物,精,熬汁

Extractive \Ex*tract"ive\, n.
1. Anything extracted; an extract.
[1913 Webster]

Extractives, of which the most constant are urea,
kreatin, and grape sugar. --H. N.
Martin.
[1913 Webster]

2. (Chem.)
(a) A chemical principle once supposed to exist in all
extracts. [Obs.]
(b) Any one of a large class of substances obtained by
extraction, and consisting largely of nitrogenous
hydrocarbons, such as xanthin, hypoxanthin, and
creatin extractives from muscle tissue.
[1913 Webster]


Extractive \Ex*tract"ive\, a. [Cf. F. extractif.]
1. Capable of being extracted. "Thirty grains of extractive
matter." --Kirwan.
[1913 Webster]

2. Tending or serving to extract or draw out.
[1913 Webster]

Certain branches of industry are conveniently
designated extractive: e.g., agriculture, pastoral
and mining pursuits, cutting of lumber, etc.
--Cairnes.
[1913 Webster]


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