Safety effective of metal forepole support was analyzed in beam and bolting with wire mesh,problem and improvement was given safety effective was ensured.
Qian, who now attends vocational school and works part-time at a gas station, discovered his fame when he walked into a cybercafe and came face to face with himself.
Taking the supplying regions as rows of the bigraph, the optimum scheme for looped grids feeder arrangement with minimum cost is obtained by a minimum weight match algorithm of bigraph.