The Determination of Cyclopenthiazide by using the ratio absorption coefficient in UV-spectrophotometer was studied.

用紫度比吸收系数法进行了环戊噻嗪百含量测定法研究。

Based on the result of theoretical research the absorption coefficient curve of a substrate material has be ound,which ensure the three-channel BCCD work in the region of X-ray.

通过理论析，找出了能保证BCCD在X区工作材料所应满足吸收曲线。