bridged-ring system

• 桥环体系

bridged-ring system的用法和样例：

例句

1. The unsaturated link occurs in a cyclic system.
   在环体系中存在不饱和键。
2. Then a hexacyclic-ring system formed as a result of molecular recombination, based on which further dehydrogenation occurred.
   然后经过重排又转变成了一个具有碳碳双键的六员环体系，并在此基础上进一步发生脱氢反应。