Refraction usually makes it possible to cover a given area in a shorter time and more economically than with the reflection method. 折射法一般能以比反射法更短的時間，較少的費用勘探一個指定的地區。
The powder of tourmaline could absorb formaldehyde and destroyed it with the surface electric field, which was studied by infrared ray diffuse reflection of FTIR. 利用傅立葉紅外漫反射法研究發現電氣石的表面電場對甲醛的吸附降解作用。
The method of conformal mapping is a tool to achieve this solution. 保角映射法就是一種尋求這個解的工具。
