The vacuum decides the flask length is 6 meters, the weight section type stereotypia. The water pump system use box in vivo circulating water, the cooling water cycle use, according to the water level and the water temperature control automatic supplement water volume, has the bidirectional fast replacement screen system. The tractor is four fingernail haulings, the hauling caliber ¦Õ160-¦Õ400mm, uses decelerator and electrical machinery which four Germany imports, carries on the control, the velocity modulation with an import frequency changer, and Canada has the reactor stably, the work reliable. The cutter is planet cutting, cutting, bevel edge one time completes, and uses the man-machine contact surface programmable to carry on the control.