插齿刀CAD系统一直是机械加工企业的攻关课题。
The development of Gear Shaper Cutter (GSC) CAD system has been a project in the machinery manufacturing corp.
危险源普查工作是国家科委批准的“八五”攻关课题。
The general investigation to danger sources is one of major subjects approved by National Science Committee during period of "Eighth Five Year's Plan ."
基金项目：本文系“九五”国家科技攻关课题部分内容。
The study contains part contents of National Key Project of "9th Five-Year Plan."
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