extractive的翻译，读音

a. 引得出的, 萃取的, 抽取的
n. 抽出物, 精, 熬汁
a. Capable of being extracted.
a. Tending or serving to extract or draw out.
n. Anything extracted; an extract.
n. A chemical principle once supposed to exist in all
extracts.
n. 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.