瀝濾法; 淋濾; 淋洗; 浸析作用
Leach, v. t. [imp. & p. p. Leached p. pr. & vb. n. Leaching.]
1. To remove the soluble constituents from by subjecting to the action of percolating water or other liquid; as, to leach ashes or coffee.
2. To dissolve out; -- often used with out; as, to leach out alkali from ashes.
n : the process of leaching [syn: leach]