您要查找的是不是：
- 环DNA circular DNA; cyclic DNA
- 开环DNA open-circle DNA
- 松环DNA open-circle DNA; relaxed circular DNA
- 环 loop
- 滚环DNA扩增 rolling circle DNA amplification
- 共价闭合环DNA covalently closed circular DNA(CCC DNA)
- oc DNA 开环DNA open circular DNA
- 环比 link relative ratio
- 圆环 traffic circle
- 环的 annular
- 环氧 epoxy
- 环氧乙烷 epoxy ethane
- 环己 hexanaphthene
- DNA开环脱氧核糖核酸，开环DNA ocDNA; open circular
- 外环 outer ring
- 环保护 ring protection
- 手环 wrist strap
- 环岛 rotary island; roundabout
- 卡环 snap ring
- 内环 inner belt
