二、物理法在现场技术问题中,除几何概念占有重要位置外,一些物理现象也相当普遍地存在和起重要作用。所谓物理法即对现场技术问题中的现象用物理概念加以解决,判断其影响:通过试验手段排除无关因素,找出主要因素,寻求对策,解决问题。现举例如下。 Second, the physical law In the field of technical problems, in addition to geometric concepts occupy an important position, some of the physical phenomena are quite common and play an important role. The so-called physical law that on-site technical problems in the phenomenon of physical concepts used to solve and determine its impact: to exclude unrelated factors by testing means to identify the main factors, to seek solutions to solve the problem. Here is an example as follows.