extraction of raw material 原料提取 ; 原料萃取
There are four key industrial economic sectors: the primary sector, largely raw material extraction industries such as mining and farming;
有四个主要工业经济部门：初级部门，主要原材料的开采，如采矿业和农业；第二产业，涉及炼油，建筑，制造；
The value of the raw material for extraction can be lost after six to twelve months’ storage.
在储藏6至12个月之后，可能失去原材料提取的价值。
Overview: The Division Lanti Vanilla extract raisins produced mainly in Xinjiang, as the raw material obtained by petroleum ether extraction.
概述：本司葡萄干萃取物主要采用新疆产的葡萄干为原材料，通过石油醚萃取制得。
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