moldboard.

/mohld-bawrd, -bohrd/US // ˈmoʊldˌbɔrd, -ˌboʊrd //UK // (ˈməʊldˌbɔːd) //

模板,模压板,霉菌板,模版

Definitions

1.
- ›the curved metal plate in a plow that turns over the earth from the furrow.
- ›a large blade mounted on the front of a bulldozer to push loose earth.
- ›a board forming one side or surface of a mold for concrete.

The furrow slice sliding over a perfect moldboard leaves the surface of the upturned ground as even as the bottom of the furrow.
The moldboard of a plow must be smooth in order to properly shed the earth freely to make an easy turn-over.
A field plowed with a defective moldboard will be full of these places.
This shows that the soil is slipping off the moldboard easily.
He had a moldboard nearly as bright as a diamond and about as hard, one that "sang" at its work.