Based on Empirical Mode Decomposition (EMD), a new method was presented to monitor flow pattern of oil-gas two-phase flow by using energy evaluation and threshold probability statistical technique.
基于经验模态分解技术，采用能量评估和阈值概率统计手段，提出了一种油气两相流流型状态监测的新方法。
2
It takes thousands of years for human beings to form the subject of probability theory from the empirical exploration in stochastic phenomenon.
从随机现象的经验探索到概率论学科的形成，经过了千余年的时间。
3
Then, the empirical distributing probability model of merging spots was set up by using regression techniques and statistical methods.