impact screen
2.Principle of operationThe ring hammer granular crusher makes use of impact hitting hammer rings cross mounted on the rotating rotor to crush materiel. after first crushed by impact force of hammer rings, the materiel is then pressed, sheared and ground between crushing plate and ringhammers to the required granular product which flows off the screen, and those uncrushed such s tramp iron, wood pieces, stone etc will be brought into the tramp iron trap.This crusher features little blast wind, less vibration andlong, service life of vulnerable.
3.The paper, with the method of literature metrology unearths the characters of sudden death during sports activities in foreign country The characters include the study on blunt impact to the chest leading to sudden death from cardiac arrest during sports activities study on sudden death in young competitive athletes, study on incidence of primary cardiac arrest during vigorous exercise, study on screen of competitive athletes for sudden death, differentiating ways between physiologic cardiac hypertrophy and pathological cardiac hypertrophy.
