关系式法是中学阶段经常用到的一种解题方法,但是很多学生不懂关系式法的解题步骤,也不知如何来列出关系式,经常不会用关系式法来解题。实际上,只要掌握关系式法的解题步骤,并能用合适的方法准确列出关系式,就能很好地把关系式法运用于计算中。 The relational method is a frequently used method in middle school, but many students do not understand the solving steps of the relational method. They also do not know how to list the relations and often do not use the relational method to solve problems. In fact, as long as the problem solving steps of the relational law are mastered and the relations can be accurately listed in a proper way, the relational method can be well used in the calculation.