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一、特征复分解反应是两种化合物相互交换成分，生成另两种化合物的反应。可用表达式表示为AB＋CD＝AD＋CB。它的基本特征是：（1）反应物和生成物都是两种不同的化合物；（2）生成物是由两种反应物物互相交换成分（即交换简单离子和原子团）而得到；（3）反应前后各元素的化合
First, the characteristic metathesis reaction is the mutual exchange of two compounds to produce the reaction of the other two compounds. The available expression is expressed as AB+CD=AD+CB. Its basic characteristics are: (1) the reactants and products are two different compounds; (2) the product is obtained by exchange of two reactants (ie exchange of simple ions and atomic groups); (3 ) Combination of various elements before and after reaction