decay time是什么意思

用法例句

With initial brightness and afterglow time as indexes,the effects of calcining heat,mass ratio of urea and nitrate,boric acid mole fraction,mol ratio of Dy and Eu on the preparation technology are discussed.

为了探讨SrA l2O4:Eu2+,Dy3+磷光体的最佳制备工艺,利用正交设计法对合成条件进行了优化,以初始亮度和余辉时间为指标,考察煅烧温度、尿素与硝酸盐的质量比、硼酸的物质的量分数、镝与铕物质的量比对制备工艺的影响。