介绍了一种新的胶合式全景环形透镜(PAL),改善了全景环形透镜的设计自由度,使全景透镜承担部分校正色差的任务,简化后继透镜组的结......

This paper presents the results of a study concerned with the surface hardening of Fe-based alloys and WC-8Co cemented c......