overlapvt.重叠；重复vi.有重叠部分n.重叠部分；重复overlap-PCR重叠PCRoverlap joint搭接接头,重叠接合overlap store重叠保存法overlap angle重合角overlap welder搭接焊机overlapping IO重叠IOoverlap-rate重叠率overlap length搭接长度,重合弧长度overlap amount重叠量overlap period重叠时间