And feasibility analysis of drilling extended-reach wells in Daqing Oilfield is made. 本文将分别给予介绍，并对大庆油田钻大位移井进行可行性分析。
While the product development is concluded, some feasible analysis is done to the hi-efficient transfer doff clothing. 在总结产品研制的基础上，对高效转移道夫针布的设计和制造进行了可行性分析。
