不少学生在解物理题的过程中 ,常出现这样的情况 :当把已知条件代入相关公式进行计算时 ,总觉得条件不足 ,从而就束手无策了 .其实 ,并不是题目缺少条件 ,关键是他们未能学会找出联系已知和未知的中间量 .所谓中间量 ,就是指在解题中起“桥梁”或“纽带”作用的物理量 ,它的作 Many students often find themselves in the process of solving physics problems: When the known conditions are substituted into the relevant formulas for calculation, they always feel that the conditions are not enough, and thus they are at a loss. In fact, it is not the problem that lacks the conditions. The key is that they Failed to learn to find the intermediate quantity that is known and unknown. The so-called intermediate quantity refers to the physical quantity that functions as a “bridge” or “tie” in the problem solving.