强调本病须尽早手术治疗、术中牢固修补VSD和原发孔ASD及恢复二尖瓣功能的重要性。
The authors emphasize early operation, firm repair of the VSD and ASD primum and restoration of the function of the mitral valve.
果实中具有三个功能不同的孔。
介绍了可转位浅孔钻CAD系统的功能、特点、结构图以及关键技术。
This paper introduces the functions, features, structural patterns and key techniques of the CAD system for the short hole drill.
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