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Two stage conical cylindrical gear reducerAbstract:Reducer is a kind of transmission device,widely used in the mechanicalindustry,affecting the transmission performance of mechanic...

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本科论文AbstractFinancial analysis is a kind of management activity,which is based on the relevantinformation in financial statements and accounting related information,through the...

Analysis and solution of aircraft maintenance human errorABSTRACTWith the birth of aircraft,aviation maintenance also appeared.Aviation maintenance is thematerial basis of aviation...

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ess mathematical history to master;Second,in the real classroom teaching environment,eventhough teachers seldom use HPM to integrate the history of mathematics into classroom teach...