特殊用法active chlorine1.活性氯; 有效氯available residual chlorine1.有效余氯combined available chlorine1.结合性有效氯electrolytic chlorine1.电解氯excess chlorine1.过量氯free chlorine1.游离氯liquid chlorine1.液态氯residual chlorine1.余氯chlorine in ring1.环上的氯chlorine in side chain1.侧链上的氯