The last two stages of the global progress of solar energy development and utilization
During the 100 years of the 20th century, the history of solar technology development can be roughly divided into 7 stages. The last two stages are introduced as follows. The sixth stage (1980-1992). The development and utilization of solar energy boom in the 1970s began to ebb shortly after entering the 1980s and gradually entered a trough. Many […]