Application discussion on coupler and draft gear system for 2 million tons heavy load freight electric locomotive

Clinical application of TSRH hook screw fixation after direct repair of lumbar spondylolysis in young patients;

Clinical study in the treatment of using hook system to fix lumbar discontinuous isthmus by single section in teenagers;

Two kinds of design schemes of coupler and buffer replacers are introduced briefly,the methodology of selecting the design scheme by the use of fuzzy comprehensive evaluation is presented,and the evaluation on the design schemes of coupler and buffer replacers by this method is carried out.