辅助量对沟通数与数(式)、已知量和未知量之间的关系,往往起着不可或缺的“中介”作用,成为解答问题的活化剂.辅助量虽参与列式、建立方程(或不等式),但一般情况下与问题的结果无关. Auxiliary volume has an indispensable role as an activator of the number of formulas, known quantities, and unknown quantities. It has become an activator to answer questions. Although auxiliary quantities participate in the column, Establish equations (or inequalities), but generally have nothing to do with the outcome of the problem.