experimental period短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 实验时间 The results showed that during the experimental period the specific activity of HTO in seawater decreased with time. 试验期间，海水中氚的含量随时间逐渐减少。 cnki Serum lipid concentrations of all objects were measured at the final day of this experimental period. 由此，观察高剂量钙摄入在高血浆胆固醇人体的降低血浆胆固醇浓度的作用。 fabiao