para position

• n. 对位

para position的用法和样例：

例句

用作名词 (n.)

1. The conjugated double bond in tung oil molecular with high activity can take place substitution reaction with one of ortho or para hydrogens of phenol.
   桐油的共轭双键具有极强的反应活性，易与苯酚芳环上邻或对位的活性氢发生傅氏取代反应。