AMESISSUBMITTEDTOZHENGZHOUUNIVERSITYFORTHEDEGREEOFMASTERFRACTUREFAILUREANALYSISOFTHEROTARYDRILLINGDIG’PINBYSONGTAOLISUPERVISORASSOCIATEPROFSHOUTONGQINMECHANICALENGINEERING一一SCHOOLOFMECHANICALENGINEERINGMAY2014摘要摘要旋挖鉆機在現(xiàn)在的基礎建設中...
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