附录A 外文文献及翻译How Remote Controls Work by Julia Laytonfrom: Introduction to How Remote Controls WorkThe worlds first remote controls were radio-frequency devices that directed German naval vessels to crash into Allied boats during WWI. In WWII, remote controls detonated bombs for the first time. The end of the great wars left scientists with a brilliant technology and nowhere to apply it. Sixty years later, some of us spend an hour
