关于未来,你需要了解的事
Will there be endless electric energy for lamps?电灯可以一直亮下去吗?Much of our electricity is generated by burning coal or gas,both of which will ultimately run out.Renewable energy sources are fraught with their own problems (not least the changeable nature of British weather),so could a Norwegian concept of raising wind turbines thousands of feet in the air where there is always a breeze become a reality?
2019-01-07(万方平台首次上网日期,不代表论文的发表时间)
共4页
15-18