| 释义 |
Grain Drill
Grain DrillAn implement for planting small-grain seed. Several streams of seed are dropped down separate tubes into narrow individual furrows made by small shovels or discs just ahead of the seed tubes. The name “drill” originated from these streams of seed and an old meaning of the word, drill, which was “to trickle or dribble.” Drill sizes varied from one-horse models through the two-horse size up to four- and six-horse models that could plant about twelve feet at a time. The drill dates back in crude form to at least 1600 a.d. and was introduced into the U.S. from England around 1840.grain drill
grain drill: see drilldrill,
tool used to create a hole, usually in some hard substance, by its rotary or hammering action. Many different tools make up the drill family. The awl is a pointed instrument used for piercing small holes.
..... Click the link for more information. .grain drill[′grān ‚dril] (agriculture) A drill used to sow small grains or seeds. MedicalSeedrill |