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...Advances in engineering research aer volume nd international conference on materials and information technology applications meita the application of object oriented software ying ding a b xiaodong zhang zhengzhou institute henan china mechanical electrical vocational college email keywords abstract is hot field development based methodology system this paper studies problems then discusses several commonly methods used characteristics basic functions trends introduction recent years with progress science times also more attention can use existing symbols to organize production purpose prescribed human financial resources time develop meet requirements refers at same way that people easily understand face reality corresponding be addressed it approach perfect combination full has brought new thinking rare good tool are formed step by from programming languages reflect ideas integrate analysis design past few decades have been rapid today s include main content problem domain natural la...