The release patterns of norgestrel in NRID in vivo were simulated after the norgestrel in NRID was dissolved by acetone and the rest of norgestre was determined by Ultraviolet Ray Spectrometer.

在实验室溶解，并紫外线分光光度仪测定枚NRID内炔剩余量，计算枚NRID内炔放量，模拟分析NRID主成分炔在山羊体内的放规律。