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

用紫外分光光度比吸收系数法进戊噻嗪百分含量测定法的研究。

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.

通过理论分，能保证BCCD在X光区工作的衬底材料所应满足的吸收曲线。