The results indicated that factors influencing out half-pipe velocity included high fall of field,the first in half-pipe velocity,the angle by velocity direction of center of gravity and direction of snowboard edge and body position out and in half-pipe.

In view of the Tarimu River basin with short water resources, the flood resources utilization orientation is put forward, as to build storage reservoirs to retain flood water; to adjust r.

The Theory and Application of the Regulations of Farmland Grading;