moldboard

名词 moldboard:

1. wedge formed by the curved part of a steel plow blade that turns the furrow
   同义词：mouldboard

mold.board

n.（名词）
The curved plate of a plow that turns over the soil.
铧式犁：翻转土壤的曲面铁板犁

来源：
mold 3
mold3
board
board