EFFICIENCY FOR THE FIELD

摘要

The mechanization of agriculture stands as one of the leading achievements of engineering in the 20th century. As the internal combustion engine took over more work formerly done by sheer muscle, the world's harvests reached unprecedented abundance. The mechanized workhorse of agriculture is the tractor. It carries out the most basic of jobs: It pulls the plow. What's more, it moves and powers numerous other implements of contemporary farming.