a. 冲积的

[机] 冲积的

[ adj ]
of or relating to alluvium
<adj.pert>

Alluvial \Al*lu"vi*al\, n.
Alluvial soil; specif., in Australia, gold-bearing alluvial
soil.
[Webster 1913 Suppl.]


Alluvial \Al*lu"vi*al\, a. [Cf. F. alluvial. See {Alluvion}.]
Pertaining to, contained in, or composed of, alluvium;
relating to the deposits made by flowing water; washed away
from one place and deposited in another; as, alluvial soil,
mud, accumulations, deposits.