求翻译：风电发达国家开展风电功率预测技术的研究有近20年的历史，最早的研究单位是丹麦的Risoe国家实验室，随后德国也进行了深入的研究，虽然采用的方法各不相同，但目前已经有多个商用预测系统投入运营。风功率预测方法基本分为物理方法和数学统计方法2种[1-4]。是什么意思？

Wind Power Wind power prediction in developed countries to carry out technology research, nearly 20-year history, the first research unit of the Risoe National Laboratory in Denmark, followed by Germany, conducted in-depth study, although the methods used vary, but There are many commercial forecast

Wind power developed countries in their wind power prediction technologies, research has nearly 20 years of history, one of the earliest research unit is the Danish National Laboratory, Germany then the Risoe also has conducted in-depth research, although the introduction of the different approaches

The wind electricity developed country development wind electric power forecasting technology research has the near 20 year histories, the earliest research unit is Denmark's Risoe country laboratory, afterwards Germany has also conducted the thorough research, although uses the method is various, b

Wind power developed wind power prediction technology of nearly 20 years of history, the oldest research unit is Denmark's Risoe National Laboratory, then Germany has also carried out in-depth studies, although the method used varies, but there are already multiple commercial forecasting system is p

Wind Power Wind power prediction in developed countries to carry out technology research, nearly 20-year history, the first research unit of the Risoe National Laboratory in Denmark, followed by Germany, conducted in-depth study, although the methods used vary, but There are many commercial forecast