| 释义 |
mole drain
mole drain n (Agriculture) an underground cylindrical drainage channel cut by a special plough to drain heavy agricultural soil mole drain
mole drain[′mōl ‚drān] (civil engineering) A subsurface channel for water drainage; formed by pulling a solid object, usually a solid cylinder having a wedge-shaped point at one end, through the soil at the proper slope and depth. mole drainA subsurface channel for draining water. |