Sleep now affects target for a random duration, up to12 seconds maximum. 现在影响睡眠对象随机期限最长为12秒,最高。
The time-frequency process of blasting vibration is a nonstationary random one with short duration, and analysis is made on the process by means of wavelet transform technique. 应用小波变换方法对短时非平稳爆破振动过程提出了时频特征分析。
The Estimation and Simulation of the Random Model for the Longitudinal Duration Data under Competing Risks 竞争风险下纵列持续数据随机效应模型的估计与模拟研究
A Random Talk on Folk Holidays in the Duration of the Spring Festival 春节期间民俗节日漫谈
Because these events themselves are hard to predict and the strong random appears to the happening scene and the duration time, it is hard to take the emergency measures. 由于这些事件本身具有难以预测的偶然性和突发性,发生地点与持续时间具有较强的随机性,所以应急处理措施较难制定。