您要查找的是不是：
- 共价闭合环DNA covalently closed circular DNA(CCC DNA)
- 共价闭合环(状)DNA covalent closed circular DNA(cccDNA)
- 共价闭合环状DNA ccc DNA; covalent closed circular DNA; covalently closed circular DNA
- 共价闭合松弛DNA covalently close relaxed DNA
- 共价闭合松弛 DNA covalently colsed relaxed DNA
- 开环DNA open-circle DNA
- oc DNA 开环DNA open circular DNA
- 闭合环数 closed loop circuit
- 共价闭合松驰DNA covalent closed relaxed DNA
- 闭合 close
- DNA开环脱氧核糖核酸，开环DNA ocDNA; open circular
- 共价 covalence
- 闭合环搜索 closed loop searching
- 水准闭合环 circuit
- 共用电子对数，共价一个原子与其他原子共用的电子的对数 The number of electron pairs an atom can share with other atoms.
- 带有闭合环的 loop locked
- 正常共价 normal covalency
- 多边形闭合环 polygonal circuit
- 共价半径 covalent radius
- 闭合环自动搜索 automatically searching of closed-loop
