Field experiments out-comings indicated that flat-straight openers significantly featured with less energy requirement and better anti-blockage ability,while pit double-disc performed excellently in soil raising,rigid forming and anti-blocking as well.

In this article, the new plane table-knife drum cutter was designed based on experiments, followed the effects of structure parameters and mobile parameters of cutter on the working performance were analyzed and the best parameters of structure and working condition were ascertained.

This paper designed and studied plane table-knife drum cutter, through test, the satisfactory operate effectiveness.

Therefore, the new plane table-knife drum cutter was designed on the basis of experiments, the effects of structure parameters and mobile parameters of cutter on the working performance have been analyzed.

Laminar free convection heat transfer of nonNewtonian power law fluids over a vertical flat plate has been studied.

On the basis of studying on research result of forage chopping and relative theoretic analyses on one-sheet hyperboloid cylindrical cutter with flat surface and straight edge, a prototype machine was designed and developed.

It is also analyses the control methods of plate flatness.